My dad passed away and we recieved money from his life policy, how do I need to file this?

My dad passed away 2 years ago and when finishing up his estate, we found that he had a life policy.  I believe the check sent to me was in December of 2023 (I have to double check)  but I did not cash it til February of 2024.  I did not receive any tax paperwork on this benefit for tax purposes, just the letter attached to the check.  Do I claim it for taxes 2023 or 2024?  What do I need to do?