Are you sure you are in the right account?
Many people have multiple TT accounts and forget how to access them. Log out of the account you are in now.
Account recovery
https://myturbotax.intuit.com/account-recovery/
https://ttlc.intuit.com/questions/1901535-forgot-your-turbotax-online-user-id-or-password
Or did you use the desktop version of TurboTax? If so, the files are on your own hard drive or any backup device you used like a flash drive.
https://ttlc.intuit.com/questions/1901486-how-many-turbotax-accounts-do-i-have
https://ttlc.intuit.com/questions/1901535
https://ttlc.intuit.com/questions/1901659-find-your-tax-data-file-in-mac
https://ttlc.intuit.com/questions/1900721-find-your-tax-data-file-tax-file-in-windows
Yes, I'm in the correct account. If you have access, you can see my 2020 tax return is available. However it's blank. I would like to begin again if I have to, but there is no option available to do so.
If the account you access has NO info in it then you are either in the wrong online account or you used the downloaded version instead. Try looking for another account as suggested in the other answer you may be surprised.
NO we can't access your return or account. We are just other users like you. Have you filed yet? Can you open your return? Click on Add A State to let you back in. Are you trying to print a copy?
Here's an alternate way to print by opening the filed return back up to print at the Print Center, where you can also get the worksheets.
You have to have your return open on the screen to get to Tax Tools and print.
Select Tax Home in the left menu.
Scroll down to Your tax returns & documents.
Select 2020, and then select Add a State (you're not actually adding a state, this just gets you back into your return).
After the return is open, click in the left menu column on TAX TOOLS, then PRINT CENTER.
Then choose Print, save, view this year's return.
The next screen should offer some options: Just my tax returns or include government worksheets (optional), or include government and TurboTax worksheets (optional.)