Retirement tax questions

A similar question - about the description of the "learn more" line, specifically, "Confirm net regular contributions prior to 2020 that "remain" in the Roth IRA".  I had 10,500 in total contributions to the Roth in prior years (before 2020), and in 2020 made distributions of 11,500.  No other distributions prior to 2020 were made.  Do I answer the question as 10,500 or 0, since no regular contributions remain in the Roth at 12/31/2020?  Only the gains remain at this time.