I've never really gotten the Beatles either. If I had to rate Abbey road I'd still give it a 5/10 , if I'm taking into account how many musicians it inspired, I'd rate it much higher.
I do think they changed a lot about pop music, that they're probably the most influential band ever, and I love the music of many musicians who cite them as huge influences, with this album being at the forefront. I just don't think the music is very good lol.