The LPGA Tour money list is the primary driver dictating what kind of status a player might have on the circuit for the following season. In the LPGA Tour's priority ranking, money list finish is the top category, although you get a two-season exemption for winning a LPGA event or a five-season exemption for winning a major.
A player must finish inside the top 80 on the money list to earn status in the top priority category for the following season. The higher up a player finishes on the money list, the better a chance they have of getting into every LPGA event they choose.
After the top 80 on the money list, the priority ranking then goes to the top 20 players on the all-time money list, then major winners, then tournament winners in the prior two seasons. Following several other smaller category groups, including the top 10 finishers on the prior season's Symetra Tour money list, players who finish 81st though 100th on the prior season money list start filling in events.
Obviously, finishing in the top 80 is a big priority for LPGA players. It helps them get into pretty much every full field event that's not a major. Of course, with a fourth of the schedule being no-cut, limited-field events, getting inside the top 30 or 40 on the money list makes life a lot easier with access to more events with guaranteed paychecks.