As you progress through Waze, you will gain points. These points put you on a leaderboard versus other Wazers. The more points, the more recognition you get.
About Adjustable Ranks
The required points to get to the next rank changes at the 1st of every month. The last three ranks are calculated by finding the lowest person in the top 1%, 4%, and 10%. This prevents users from having to chase an ever-increasing line, and allows users that become inactive to drop out of these ranks.
All of the point requirements are calculated for each Province or State. Your primary Province or State is the place where you do a majority (51% of Miles or more) of your driving, and is calculated at the end of each month. If your state or province seems to be changing randomly, you can put in a support ticket to get it locked to a single state or province.