I received a check from the trust for the international brotherhood of electrical workers pension benefit fund. It says it’s a death claim. Is this money taxable?

My dad passed away and his union sent me what they called a death claim. A check for less than $1000 representing payment of the death claim. Trying to figure out what to do with this on my income taxes. I did not receive a form such as 1099 – INT or any other form except for this letter. Then a little while later, the check came.