Inheritance from insurance company and its 1099-R

Received an inheritance check from an insurance company in 2022.  I received a 1099-R for this too. I read that inheritance is not taxed as income and to ignore the 1099-R (!), but then I see other posts saying I must report it. Box 7 states 4D on the 1099-R . Box 4 indicates there were some federal taxes taken out already. Most 1099-R questions I see on here are regarding retirement, but this was a lump sum inheritance. What to do?