If you are trying to report the any taxes to be paid on the 2020 COVID retirement distribution that you spread over 3 years then please follow these steps:
Please verify that you have the box checked next to "If this was a Coronavirus-related distribution reported in 2020 check here". Then make sure you enter the amount from Form 8915-E, line 9 twice (if it was not from an IRA) or enter the amount from Form 8915-E, line 17 twice (if it was from an IRA). This amount should be 1/3 of your 2020 COVID distribution.