I guess he will be presented with it during an award assembly then.
It's odd they would tell him in advance.
West Point Societies from the Association of Graduates, will look for and present the West Point Leadership award to a high school junior that typically presents a high level of academics/leadership/athletics and citizenship. All qualities that West Point is looking for in a future cadet.
It's a way of the Alumni and friends of West Point to honor West Point ideals and encourage students to apply.
He can send in a copy of his certificate to his admissions Regional Commander. There is no rush on this - anytime this summer is fine.