You might find some usable treasures in there, but it will definitely be work. Our place is a bit like that too. Every shed was full of crap. They took most of it and now I'm stuck with pulling out the junk
I can identify with that!
Having bought this place from my Brothers, and having had family living here for better that 100 years I have junk everywhere. It seems I am suppose to get rid of the junk, but the good stuff is theirs or should be divided equally. I failed to see anyone offer to divide the last roll off dumpster charges.