if i delete these will anything happen that will affect the playlists?

No.

should I be deleting these 1175?

That's another question.

What this means is that those 1175 tracks are not listed in any playlist. They got orphaned somehow. They are not currently (easily) playable on your empeg. (I think if you searched for one of those tracks directly, it'd show up.) So you need to decide if you want to reattach them to playlists or if you want to get rid of them. They might have been part of playlists you deleted or they might be tracks you tried to replace.