I am pretty new to guessing the difference between cockerals and pullets, but yours looks like a cockeral. I'm thinking this because of the size of the comb and wattles. He looks like one of the RIR cockerals we have, who is about 4 mos old.
Hopefully, someone with more experience will jump on to help you out.
Hopefully, someone with more experience will jump on to help you out.