How do I make sure that my 2019 information is correct and I did not put my 20/20 information on it because I am filing both of them this year in 2021

What! You can not use the online version to enter or file 2019.  Online is ONLY for 2020.  Did you file it?

If you have not filed from Turbo Tax yet and entered 2019 info into the 2020 Online version you can try to clear and start over. Then use Turbo Tax for 2020.

Online is only good for 2020 now.  If you tried to use the Online version for a prior year you should try to clear it out so it's not accidentally filed as a 2020 return or transfers into next year.

https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-online/00/26444

Or you can leave this account and set up a new account to do 2020.  How to start another return in the Online version

https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-start-another-return-in-turbotax-online/00/25596

Then do you still need to file 2019?  To do 2019 you have to buy the Desktop Download program here

https://turbotax.intuit.com/personal-taxes/past-years-products/     

Or If you have a simple return You can fill out the blank forms for free.

Here is the 2019 1040 return

https://www.irs.gov/pub/irs-prior/f1040--2019.pdf

or if you want bigger type use 1040SR for Seniors,

https://www.irs.gov/pub/irs-prior/f1040s--2019.pdf

2019 Instructions https://www.irs.gov/pub/irs-prior/i1040gi--2019.pdf

2019 EIC and Tax Tables https://www.irs.gov/pub/irs-prior/i1040tt--2019.pdf

2019 Schedules 1-3

https://www.irs.gov/pub/irs-prior/f1040s1--2019.pdf

https://www.irs.gov/pub/irs-prior/f1040s2--2019.pdf

https://www.irs.gov/pub/irs-prior/f1040s3--2019.pdf