You don't need the 5498. You do not report the 5498 on your tax return. You just enter the 1099R and say NO it was not the RMD (since no RMD was required for 2020). Then say you rolled it over. It will show up on 1040 line 4a for the full amount then should be zero on line 4b with the word ROLLOVER by it. Unless you had any withholding taken out. If you didn't replace the withholding from your own money then the withholding will become a taxable distribution itself.
