@rupunzlkim can't answer you question directly, but it doesn't matter what you enter. As you are over 59.5 years old, and the Roth has been opened for at least 5 calendar years, there will never be any taxable income related to the withdrawals.
what is the code in Box 7? if a Q (which is should be), that is all TT needs to know so there is no taxable income on the distribution.
