Xrays  not visible. So no opinion can be given.

Usually if the fracture is undisplaced, the patient doesn't require a surgery. In his case, the fracture is displaced. If the fracture is not in place even after the brace, then he will definitely require surgery. It is easy to treat a fresh fracture than an old fracture which has not United ( Non-union). I would advise another x-ray with the brace on, to see if the fracture ends are meeting. If they are not meeting, I strongly suggest surgery

Depends on patients demands I suggest in these covid times just do physiotherapy and you will be better

There are advantages and disadvantages of both surgical and non surgical treatments.. Surgical treatment involves application of plate which holds fracture in place and enhances bone healing.. Non surgical technique involves use of external strapping support which can hold the fracture in its place to some extent.. Considering his young age, fracture displacement, it would be better to choose surgical method of correction. If he was old aged person, with less mobility and requirement of shoulder movements,  conservative management would be better..