There’s lots of ways to help. For example, if I wanted to help you work on an important problem and you were so much smarter (or otherwise more competent) than I that I could never contribute any useful assistance to that project, I could instead offer to pay your rent or do your laundry or cook your meals or otherwise perform tasks better-suited to my comparatively limited skills, thereby freeing up your intellect to work full-time on the problem.
There’s lots of ways to help. For example, if I wanted to help you work on an important problem and you were so much smarter (or otherwise more competent) than I that I could never contribute any useful assistance to that project, I could instead offer to pay your rent or do your laundry or cook your meals or otherwise perform tasks better-suited to my comparatively limited skills, thereby freeing up your intellect to work full-time on the problem.
Or, in other words, comparative advantage for the win!