You say that you are a "business owner" but did not mention how your business is structured. Is it a sole proprietorship for which you prepare a Schedule C? If so, you might have used online Self-Employed for a 2020 return. Or is it a S-corps or C-corps for which you would have used desktop download TurboTax Business on your own Windows computer? If you used desktop software the return is only stored on your own hard drive.
If you used online software:
You have to access your own account and/or print it for yourself using exactly the same account and user ID that you used when you prepared the return.
https://myturbotax.intuit.com/
Start a 2024 return online and enter some personal information so that the menu on the left opens up and lets you access your past year returns.
https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-access-my-prior-year-return/01/270...
https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/save-2021-turbo...
Many people have multiple TT accounts and forget how to access them. Log out of the account you are in now.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/many-intuit-accounts-...
Account Recovery
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/turbotax-support/en-us/help-article/tax-return/find-last-year-tax-data-file-...
https://ttlc.intuit.com/turbotax-support/en-us/help-article/data-systems/find-tax-data-file-mac/L4VN...
You can get a free transcript from the IRS or for a fee of $30, an actual copy of your tax return.
https://www.irs.gov/individuals/get-transcript
https://www.irs.gov/pub/irs-pdf/f4506.pdf
SAVE YOUR TAX RETURNS !
EVERY year before mid-October you should save a copy of your tax return as a pdf and print a copy of it for your records. That way you will not be searching online frantically when you need it for a lender, FAFSA forms, your next tax return, etc.
https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/save-2021-turbo...
https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/save-2021-turbo...
In order to transfer a past year return to the new return you need the tax file
https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/save-turbotax-o...
NOTE: TurboTax and the IRS save returns for seven years. Returns older than seven years are purged.
And....TurboTax never knows how, when or even if you paid your tax due. Your only proof that you paid your tax due is your own bank or credit card record.
**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.**
