Halo 5: Guardians did not launch with campaign scoring. Instead, it was added with a post-launch Title Update around June of 2016.
While not present in the original Halo 4, it made a welcome return to Halo 5: Guardians. One additional feature of Halo 5’s campaign scoring is that all cutscenes are automatically skipped.
I am hopeful that campaign scoring returns for Halo Infinite, however I would like this automatic cutscene skip feature to be an optional setting and not mandatory. I enjoy playing campaign missions with scoring on, but I am not trying to skip cutscenes every time.