Q.Bird’s nest fern under palm
We had a very healthy bird’s nest shaded under a tree. We had to remove the tree and the fern has browned off completely. Will it come back? Should we remove all burnt leaves?

Since the Bird's Nest Fern is a lowlight fern, it may well have suffered great stress from the light change.
I would trim away any dead leaves, shelter the fern from the bright light and wait and see.
Here is a link to refresh you on the care requirements.
https://www.gardeningknowhow.com/houseplants/birds-nest-fern/birds-nest-fern-care.htm