Yes, add to your December 31, 2019 balance the amount of any contributions made for 2019 in 2020, disregarding any other changes in value after December 31.
Note that TurboTax only asks for this as part of determining the penalty for an excess Roth IRA contribution. If you've entered all of the other information needed to determine the amount that you are eligible to contribution to a Roth IRA for 2019, you need to be investigating correcting that excess before the due date of your tax return (or if you have not yet made the excess contribution, don't make it).
