Get your taxes done using TurboTax

No, TurboTax is not 'assuming' any amount.   Based on your return, it calculates the amount you are eligible for, then asks you to confirm that this is the amount you received.

If you say NO, this is not the amount we received, then you are asked to enter the amount you actually did receive (as @DaveF1006's screenshot showed).

If you're using TurboTax Online, try closing the program, clear your Cache and Cookies and re-open TurboTax.  Sometimes data can 'hang' in the program.

Click on Deductions & Credits, scroll all the way to the bottom of the topics list, and Continue.

You should get a screen titled 'Let's Double Check the Amount You Received' (screenshot).