For...what? Gamemaker studio?
Cause it depends on the warnings?
There are warnings from "This will be depreciated" from "This function isn't called properly" or "You're only using this variable once" etc...many of them can be ignored, but others are worth looking at.
But without many other details it's like asking "There are a bunch of warning lights. Should I ignore them?" And I don't think there's ever a time when someone says "Yeah just ignore the flashing lights and proceed."