The Coronavirus-Related Distribution is a type of disaster distribution. In 2021 TurboTax you should indicate that you received a disaster distribution in 2020. To do that visit IRA, 401(k), Pension Plan Withdrawals (1099-R), then as you proceed through that section (If presented, be sure to click the Continue button on the page that lists 2021 Forms 1099-R that you have entered) indicate that you received a prior-year disaster distribution, and that you had a 2020 Qualified Disaster Distribution. TurboTax will present boxes where you'll fill in the necessary details from your 2020 Form 8915-E.
Regarding amending with TurboTax:
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-change-correct-return-a...
