Question

fern   i recently got my ferns out of my brothers green house and they look all brown do i need to cut that off?

Answer
This fern has been burnt, most likely by sun or frost.  Cutting off the burnt fronds at the base would help it recover faster. I would also suggest transplanting (re-potting) to a much larger container with fresh soil because the fern is too big for the pot that it is in.

DC