Did you forget how to access your 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
To get a copy of your previously filed returns prepared with online TurboTax https://ttlc.intuit.com/questions/1900748-how-do-i-get-a-copy-of-a-return-i-filed-in-turbotax-online
After trying prior suggestions - Manual download of all updates for the tax years of Turbo Tax downloaded but Error message "bad image" and locks up the pop-up so you have to ctr + alt + Del to close the window. Why can't I open these programs I bought and contain my personal info. Who owns my info?
I still can not open 2019, 2018, 2017, 2016, Turbo Tax programs loaded on my Windows Computer Will not update or allow me to access my prior years returns. I thought my information belonged to me . Why am I locked out of Turbo tax.