Below your question it says your product is Free Edition.
If you are using Free Edition, you can't do a transfer from the desktop 2020 data file into that product. It requires a higher edition. See this FAQ on how it would otherwise be done. Choose your scenario there to see the instructions..
FAQ: How do I transfer last year's return into Online TurboTax?
https://ttlc.intuit.com/community/entering-importing/help/how-do-i-transfer-last-year-s-return-into-...
