ProYT

From what I understand, the rank above your head (Officer in your case) changes with the number of posts you make. There are 9 in total. The higher up in posts you get, the more spread out the goals become. If I can remember correctly, my last one was at 2,500 and I won't get my next "rank up" until 5,000 (could be wrong tho).

As for the Reputation, that is simply got by people liking your content and has no real tie to the rank. The only thing you can get from that is winning the day by having the most reputation for that specific day. Leaderboards are found here: https://www.lcpdfr.com/leaderboard/

Hope This Helps!