From the information we have gathered you are rolling in normal division mode until you hit the pillar of final points for division one for the first time. You earn the whole lot of crates in tab called "League division" and you redo league division monthly. You achieve the crates all over again per month as you redo the league division. Meanwhile partaking in top season of 500 for division one and the points you score will advance you in ranking. You don't earn any real reward for being one of top 500. It is just a mere show off for end game player to become game's "super star" and definitely it is not meant for new players or free players to be part of it.