Being able to hum a tune or not is a bad barometer for the quality of a score.
It shows how well I remember the score itself. There isn’t any original music I remember from TLJ.
That’s a you problem.
Yes, each persons ranking stems from their own opinion.
I use that ranking to see memorable the music is. If you’ve ever seen the video essay “marvel symphonic universe” they go around asking people if they can remember music from certain movies. It is a good way to see how impactful a score can be.