I have to give this one to Luke Cage. Both seasons, though especially season 1, were amazing and the music definitely helped drive the story forward. Embracing that kind of Harlem culture and music for both its score and music offerings was incredible for the story and I absolutely loved the diversity and different genres of hip-hop, jazz, blues, rap, and soul that it brought to the table. WandaVision had an amazing soundtrack too and the Jessica Jones spy themes were great as well. The TV shows obviously had better soundtracks as I feel the movies always had bland boringer music that was good only at points, but I did love the use of music in the GOtG film (score not the music that kind of stunk); and more recently the entire soundtrack in both Avengers: Endgame and Spider-Man: Far From Home both of those actually had really great music.