The YouTube channel Every Frame a Painting has an excellent video about music in films. Why are some scores so memorable while others are easily forgotten?
The Marvel Symphonic Universe (2016): https://www.youtube.com/watch?v=7vfqkvwW2fs
You don't have to have seen any Marvel movies, the insights are universal.
(Also worth watching the follow-up video: Hollywood Scores & Soundtracks: What Do They Sound Like? https://www.youtube.com/watch?v=IEfQ_9DIItI)