How to safely remove fuse box from engine compartment

[Chace]

Hey guys, so while checking the audio fuse from the engine compartment, I accidentally dropped the fuse inside of the fuse box.  There is no way to reach it with anything so it looks like I need to remove fuse box and turn it upside down to get it out. I can’t find anything on how to remove this fuse box for this model car 

Unless there is a way to remove some of the compartments within the engine compartment  fuse box so that I could then get the fuse out?

Any help wouldn’t be welcomed!

[1990LS400]

Why bother?  Just leave the lost fuse where it landed and buy a replacement fuse to use.