Well I play 10 months and I'm 98, depends on how much you play a day.
How to get much score?
Play maps you haven't played,
replay them with different rankable mods (NF too) and different mod combinations, because for some reason replaying the same map if you get better score adds only a difference between your old score and new one, and mods count as a different map.
Long maps give you more, specially if you are able to hit high combos