ROTS A+
ANH A+
TPM A+
AOTC A
ESB A
ROTJ A

The Clone Wars (movie) D
Rogue One C+
TFA D

Honestly the TFA soundtrack has maybe two memorable tracks and the rest are just “homages” to earlier iconic tracks or instantly forgettable. No idea what happened with the TFA soundtrack, though I’d say it has to do with JJ’s rapid pacing style, which is not something that was in previous Star Wars films and gave John Williams a lot more breathing room in the past.
In saying that it’s not a bad soundtrack, I’m just comparing it to the other films in the series.