Sounds like you sped past the screen that asked for your 2019 AGI-- unless you transferred 2019 into 2020 and it was already there for you. Your signature is electronic---it is your 2019 AGI or PIN.
There is never a physical "signature" on an e-filed return. If you are asked for a "signed" copy by a lender, etc someday you take out a pen and sign it to keep them happy.
**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.**
