In the comics, Billy Butcher doesn't possess powers. He relies on his combat skills, experience, and a never-back-down attitude to fight against those with supernatural abilities.
Billy Butcher has a lot of ups and downs in the comics. He has to deal with personal demons and external threats, which leads to some unexpected developments.
Billy Batson's powers as Shazam could bring a lot to the Avengers. His super strength, speed, and flight would be great assets. He could also use his wisdom of Solomon in strategic planning. For example, in a battle against a powerful villain like Thanos, his raw power could help in direct combat, while his wisdom could assist in finding the villain's weaknesses.