What does willy want young bernard to do for biff?

Willy Loman wants young Bernard to help Biff by tutoring him and assisting him with his studies. He believes that Bernard's academic success could positively influence Biff's future and ultimately lead to greater opportunities. Willy sees Bernard as a model of diligence and intellect, qualities he hopes will rub off on Biff. This reflects Willy's desire for Biff to succeed where he feels he has failed.