I don't understand what you did. You don't enter 2019 info into a 2020 return. And every year you file a 1040. That is the tax return. You enter your W2s and any 1099 forms you get into your tax return. Turbo Tax fills out a 1040. Better check it over to see what you included.
Before filing, You can preview the 1040 or print the whole return
https://ttlc.intuit.com/community/accessing/help/how-do-i-preview-my-turbotax-online-return-before-f...
How to get a copy after filing
https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-get-a-copy-of-a-return-i-filed-thi...
