If you entered 2019 into the Online version you should clear it out so you can use it for 2020. And so you don't accidentally file it as a 2020 return with 2019 info.
You can try to clear it.
https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-clear-and-start-over-in-turbotax-onli...
Then when you file your actual 2020 return you will need to enter 0 for the 2019 AGI since you are filing 2019 late.
