Please review:   Context

Rather than play 20 questions, it is often helpful if you post screen shots of your form, code behind it, etc that would help us visualize what you are doing.  

You can upload screen shots via the original post in the upper right hand corner.
Walk us through step by step what you do to generate the error like we were 3rd graders.
What, specifically, is the error you get?

I'm assuming you mean query expressions that you create in the query to do calculations with. These are NOT stored in the table, depending on use it's not wise to store the calculation either (there are some justifications such as a lot of calculations, across many records, ran frequently could take a long time to run and then could justify making a table field for them).

Query expressions only exist in the query and on things based off of the query, when you need to use them it will re-calculate them every time you use the query. If you base your form off of that query, you will be able to add the fields that you made in the query to the form, but again, they are not stored in a table.

If you have a justified reason to store all the calculations in your table, what you need to do is add the fields to your table and then use a VBA event (button or on current, whatever you want) to run the calculations and put the numbers in the right fields.

Also, the criteria field is used to LIMIT results, if you want to calculate a number like call length, what you need to do is make a expression, and do something like CallLength: [EndTime] - [StartTime]

I got it finally, able to upload the image of the code builder of the Form. Now in the counseling form you see the start time and end time and on the top is the call length. I don't know how to word the code to put in to get the how long the call was. When we first get the call to start and then we end the call and hopefully we don't have to press on the call length it will just automatically fill in. The start time and end time fills in on click. I tried 3 different codes but I cannot remember where they are, I didn't save them because they didn't work. The error I got was compile error.

LHS = RHS
What is your LHS?

Do you see a picture I don't see Alex? Whats LHS/RHS.

Just add into that EndTime_Click Event below the EndTime=Now()

If IsNull(StartTime) Then
'Do Nothing
Else
CallLength = EndTime - StartTime
End If

I don't see those either Adam.

LHS - Left Hand Side
RHS - Right Hand Side

I've never heard that before.  Sometimes the "shorthand" causes more issues than taking an extra second to type a clear response.

Hi Alex I did what you put down for the end time. When I ran it, it gave the error Run TIme error 13. Sorry it didn't work. I just need to keep searching or someone will have an idea about it.

Are those your correct field names? That should work. You have to substitute your field names in there.

Details matter.  In this case the second part of the error in the message box.  : Type mismatch

From Google:
The Run-time Error '13' occurs when you attempt to run VBA code that contains data types that are not matched correctly.

In other words Access is saying you can't put a square peg in a round hole.
Make sure that StartTime, EndTIme and Call length are correct data types.

Hi Scott, this is the table that all three have the same data type. The start end and call length. The date and time goes in to just the start and end time but not until we get a call then we input the start time of a call. I watched the beginner training course on the different datatypes and I do understand just a little as Richard explained them. If we did put the now() in the table the form wouldn't work. We need to now() in the form so we can click on them and it would input the date and time in as we get calls. As far as I can see is short text is the best data type for how we need it to work.

YUP that is the issue.  Those 3 fields need to be Date/Time not Short Text.  EVEN if you are only doing time.

Watch Calculate Total Time Spent
Employee Time Clock
Time and Billing

Mark
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I do NOT recommend storing CallTime in your table. Calculate it using a calculated query field. The only exception would be if you were generating reports with THOUSANDS of them at a time.

BTW - I'm a student just like you.  
I don't get anything out of this endorsement.  I'm a Gold Member and I can tell you that access to the Code Vault is priceless.

Also, I see from your screen shot you've got spaces and / characters in your field names. That's going to cause problems for you in the future. I'd remove them now while you can.

Sorry Richard - I missed that one.  
Definitely change Date/Time for sure.  Make it something like CallDateTime.