Tournaments at the present time are not held, so this currency is currently unobtainable.
A tournament token (Abbreviated as TT) was the most valuable currency in the game, because it could unlock the best kits in some minigames. A classic example is The Walls, where this currency could be used to buy 5 kits. Furthermore, this currency couldn't be used on a lot of things, and could only be earned while in a tournament. Tournaments were very rarely hosted, and each tournament had a token limit, due to which the currency remains very rare and valuable.
Since The Walls and Quakecraft update, Tournament-specific items/kits are buyable by regular Coins, making the TT useless (and probably removed).