After you file

Is the Documents tab not present in your left menu column?   When you log into TurboTax for the first time this year, you may not yet have the Tax Home tab and Documents tab visible in the left menu column.    If they're not there, then you may have to first proceed a little further by answering some preliminary screens and may even need to choose a 2020 product to get them to appear (you are not obligated to use it.)    Once you continue far enough to have those tabs, follow the instructions that  @ ChondelLO   left you above; i.e., either click Documents tab, select a tax year, and download the PDF (see image below).  Or here's another way: click Tax Home tab and scroll to the bottom of the Tax Home page and choose "Your Tax Returns & Documents", expand that section, and choose the tax year.

Once you get to "Your Tax Returns & Documents", if there is no evidence in that section of any prior returns, we can tell you how to look for multiple accounts.

This image might help:

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