TurboTax does not support tax years prior to 2022.
To complete and file a prior year (2022 thru 2024) tax return using TurboTax you would need to purchase, download and install on a personal computer, Windows or Mac, one of the desktop editions for each tax year required from this website - https://turbotax.intuit.com/personal-taxes/past-years-products/
A prior year tax return can only be printed and mailed, it cannot be e-filed using TurboTax.
Go to this TurboTax website for the 2025 desktop editions - https://turbotax.intuit.com/personal-taxes/cd-download/
Go to this TurboTax website for the 2025 online editions - https://turbotax.intuit.com/personal-taxes/online/