Veteran is the second level in the Bankroll U payout structure, which you reach after successfully completing Rookie. At the Veteran level, you'll receive 20% of the in-level profits you generate. These profits are automatically transferred to your player wallet upon completion of the level.
Reaching Veteran means you're closer to maximizing your profit potential. After completing Veteran, you'll advance to All Star, where you'll keep 40% of your in-level profits.