Normal Rank - 0 Points - 64 Items in Storage
Bronze Rank - 100 Points - 96 Items in Storage
Silver Rank - 400 Points - 200 Items in Storage
Gold Rank - 1600 Points - 320 Items in Storage
Diamond Rank - 3200 Points - 480 Items in Storage
Super Rank - 6000 Points - 560 Items in Storage
Ultra Rank - 10000 Points - 640 Items in Storage
Hyper Rank - 15000 Points - 800 Items in Storage
Master Rank - ? Points - 1000 Items in Storage
Secrey Rank - ? Points - ? Items in Storage

After you graduate from Wigglytuff's guild, do a job. The Next day talk to Mr. Mime and rescue Scizor to be granted Secret Rank.