Ahh. A protective sunlight cover. Yeah, depending on how direct the light was and for how long will dictate how skunked it will be, if at all. Again, if it wasn't sitting in front of a window being shined with 8 hours of direct sunlight each day and only received ambient daylight you may not notice much of an issue at all. But direct sunlight will definitely bring about some skunky flavors.
Fermenting in plastic buckets ftw.