Wow, that is amazing that you are wanting to do this. First, find out where he is and then send him a letter. Get the communication going between you. Once you feel that he is open to a meeting, you can apply for visitation approval and then go see him.
https://www.inmateaid.com/ask-the-inmate/i-was-adopted-at-age-8-and-just-now-found-out-about-my-biological-father-being-in-prison-for-life-without-parole-im-now-33-years-old-id-like-to-come-meet-him-but-have-no-clue-how-this-sort-of-thing-works-or-if-he-would-agree-or-like-to-meet-me-as-well-etc#answer
Accepted Answer Date Created: October 01,2019