Hello @Sermet and welcome to our wonderful community. We only use English here so in future could you please submit your posts in English. If necessary you can use Google translate.
However I think you are asking about the new Sugar Stars feature. They are a new additional challenge where if you complete a level with three stars, you have a chance to get the sugar stars if you score an additional amount of points. There is no 'prize' for it, but you do get to have those pretty stars show up on your map for any level where you get them. I hope that answers your question. And please remember, in future please post in English. Thank you.
A sugar crush happens at the end of the level, when you still have movies left and you have completed the main goal of the level, it will take your remaining moves and send out either striped candys or swedish fish, maybe even more (hope this helps)
Hello @The_Real_Trapper - I'm so glad you have joined our community and are enjoying participating in the various threads. 😊 I actually provided the answer concerning what sugar stars are but appreciate your explanation of what happens when you finish a level before you have used up all the moves. Thank you.