Is there a way i can get really muscluar looking in less than 2 months?

well heres the deal i have been training in mma since i was 6 right now im turning 16. there is a fighting tournament at my school for my grade where we fight each other but we have pads on of course and winner gets 5000 bucks ok and no one knows i have been training in mma like kickboxing/boxing/mua thai/bjj at all so i can guarantee i win this tournament bu my problem is they wont let me compete cause i dont look muscular enough ok im skinny im 5,2 and weigh 110 pounds im very strong just not muscualr at all ok so this tournament is in 2 months if i can get muscular enough by then i can compete and easily win mu 5000 bucks so how do i get big fast i dont even care about strength since i got enough and i know how to fight so please help me i can guarantee i can win but i just dont look big enough so please help me