Since your 2020 return has not yet been processed then when it asks for your 2020 AGI in order to e-file 2021, use zero. The IRS will not have a 2020 AGI in the system for you.
After you e-file---watch your emails.
When you e-file your federal return you will receive two emails from TurboTax. The first one will say that your return was submitted. The second email will tell you if your federal return was accepted or rejected. If you e-filed a state return, there will be a third email to tell you if the state accepted or rejected your state return.
First, check your e-file status to see if your return was accepted:
https://turbotax.intuit.com/tax-tools/efile-status-lookup/
If the IRS accepted it, what does it say here?
https://www.irs.gov/refunds
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
