I don't receive any distribution after 2019, but there is a value of $1,200 in line 4, form 8880. Are there reasons to cause this? Can I fix it?

Yes, you can delete the Form 8880 for the Saver's Credit to remove it from your return. 

Here's the general procedure for viewing a list of all the forms in your return and deleting unwanted forms, schedules, and worksheets in TurboTax Online:

1. Sign in to TurboTax and open your return by selecting Continue or Pick up where you left off
2. In the left menu, select Tax Tools and then Tools
3. In the pop-up window Tool Center, choose Delete a form
4. Select Delete next to the form, schedule, and worksheet in the list and follow the instructions

I hope this helps.