As a point of clarification in the event that you decide to dig deeper into how this rating algorithm uses, Elo is a specific rating system, not a generic term for rating points. So, if you start searching for terms about Elo points in the Glicko2 system, you’re going to have a much harder time getting specifically relevant results.
(It’s also worth noting that Elo is not an acronym, it’s the last name of Arpad Elo, the man who invented the system.)