@themuirz-aol-com When you opened Turbo Tax 2020 did your return show up in it?
If you don't have the main .tax file you might have one that starts with a Tilde sign ~ like "~your name.tax2020". That file is if your computer crashes or your real file gets lost or deleted or corrupt so you can restore it.
Do you make backups? The tax files (and PDF files) should be in your Documents then in a Turbo Tax subfolder. If you can't find them do a search for all files ending in .tax or .tax2021 or .tax2020 etc. And check the Recycle Bin. For Windows 10 check the One Drive. One user found the file in the One Drive recycle bin.
