If the typo affected the computation of your return, you'll need to amend.
Please see the TurboTax Help article "Do I need to amend?" to see what circumstances might trigger the need for filing an amended return.
However, if it was a simple typo and the IRS accepted your return, you probably don't need to take any action. The IRS has verified the information that it actually needs to process your return.
[Edited 3|17|2020 9:37 am]
