On the page in 2020 TurboTax that lists the 1099-R forms that you've entered, click the Continue button and and proceed to the questions that ask for your Roth IRA contribution basis and whether or not your first contribution was to a Roth IRA before 2016.
If your first Roth IRA contribution was for 2016 or later, the $10,000 of earnings distributed in 2020 will be subject to ordinary income tax but not to an early-distribution penalty.
