For most baseball playing kids the goal is to get into the best college possible and have the opportunity to play some ball. Congratulations to your son for achieving this.
I know and know of two 6’2” kids (they’re thirty-two now) who threw about 80 when they received offers from high academic D3’s. By the time freshman year ball started two years later they were throwing 84/85. When they were drafted senior year they were at 92/93. They kept filling out and getting stronger.
Obviously this is anecdotal. It doesn’t happen for every kid. But as the saying goes, “why not me?” Good luck!