As Jackpot Wins is not a real casino, but a Casino-like game, any tournament prizes or game winnings are added to your in-game balance to increase your playtime and level, and can not be cashed out.
Purchases are also meant for increasing your playtime, increasing your VIP level and gaining access to bigger and better perks.
Use of the Slots of Vegas app is strictly for entertainment purposes and not meant to be used for gambling of any kind.