Silly question my friends but... does anyone know where bees go at night?

The places bees sleep at night depends on the role they play within the hive. For instance, the older bees responsible for foraging sleep towards the edge of the nest. They are often the last to come into the hive at night and the first to leave again the next day.

https://beekeepercenter.com/where-do-bees-go-at-night/