Priests, Deacons, Bishops, doctors, lawyers and Biblical research scholars and professors. To some extent.
Father Mitch Pacwa on the TV show Scripture and Tradition will sometimes say about a passage “Of course the Greek word was —— and the Latin was——but the Masoretic Hebrew scroll used the term——.”
I vaguely knew a little from 2 years of Latin in the 1960s but know even less today.
People learn it and read it, some write in it; and you can still find a Latin Mass here and there.
But it’s a dead language as far as being anyone’s first.