Star Cup is a time-limited event where you compete with other mergers. You can enter the Star Cup after completing an order and collecting star/s.
After entering the Star Cup, you compete with other mergers to win amazing rewards. During the event, you collect stars as you complete the customer orders, and you will rank up based on the number of the stars you collected. You can see your ranking by tapping the Star Cup icon on the home screen.You can see your ranking by tapping the Star Cup icon on the home screen.
When the Star Cup is over, you can claim your reward based on your rank.
Every Star Cup event is a different tournament; therefore, you cannot transfer one event's star count to another.