There are 14 ranks in total. Each one has an XP requirement and a free SC reward when you reach it:
Rank | XP required | Reward |
Bronze | Starting tier — everyone begins here | — |
Silver I | 10,000 XP | 20 SC |
Silver II | 25,000 XP | 30 SC |
Silver III | 45,000 XP | 40 SC |
Silver IV | 75,000 XP | 60 SC |
Gold I | 125,000 XP | 100 SC |
Gold II | 250,000 XP | 250 SC |
Gold III | 450,000 XP | 400 SC |
Gold IV | 700,000 XP | 500 SC |
Platinum I | 1,000,000 XP | 600 SC |
Platinum II | 1,500,000 XP | 1,000 SC |
Platinum III | 2,250,000 XP | 1,500 SC |
Platinum IV | 3,500,000 XP | 2,500 SC |
Royalty | 5,000,000 XP | 3,000 SC |
You can see your current rank and progress on the CoinsClub page in your account.