If you are asking about a traditional IRA contribution for 2019, the fact that you were subject to an RMD for 2019 suggests that you were age 70½ or over in 2019, making you ineligible to contribute to a traditional IRA for 2019.
If you are asking about making a Roth IRA contribution, any kind of IRA contribution for 2020 or the RMD was from an inherited account and you were not over age 70½ in 2019, yes, you can make an IRA contribution if you have sufficient compensation from employment to support the contribution.