should i play offense or defense I'm 6 foot 7 and 300 pounds also could i get a scholarship for being my size?

Go with what your better at and go with what your heart is set on. And yes most likely at your size you can get a scholarship. Play hard!

I'm assuming you're a lineman, & it's not out of the question that you could be playing both o-line & d-line which would benefit you also. You won't get any scholarships on your size alone tho, its what you can do with your size that college coaches look at, but you'll get their attention with it tho

If you lost weight you could play WR maybe but it depends if youre fast if so then TE