You have up to the due date of the tax return (now May 17) to make a 2020 IRA contribution. That would be entered in the 2020 IRA contribution section and will be based on the 2020 earned income even if made in 2021 for 2020.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
