Then the only thing I can think of is that you are in a different Online account from what you used to start your 2019 taxes in.
1) The "Tax Home" screen must appear for you to click on the left side of the screen...after working thru the initial stages of the 2020 tax questions...
2) Then if you scroll down, and expand the "Your tax returns & documents"....if there is no 2019 tax, then you are either in the wrong account, or you did NOT use TTX Online software to start your 2019 taxes last year (or you used the CD for 2019 taxes...which you imply that you didn't).
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https://ttlc.intuit.com/community/account-recovery/help/forgot-your-turbotax-online-user-id-or-passw...
Barring your finding a different Online account that you used, then you 'll need to start 2019 taxes over from scratch with the 2019 software you downloaded and installed on your home computer.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
