Well 2022 online is closed so you can't transfer 2021 into it. But when 2023 Online opens in Nov or Dec you can transfer from 2022. But only at the beginning before you start 2023.
If you used the Desktop program last year here’s How to transfer into the Online version. You need to have the prior year .tax2022 file on your computer. Expand the link if you used the CD/download last year........
https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/transfer-last-y...
