Help! Rating stars and animated buttons

Hello guys , I need your help .

I want to create a level playing with star ratings . I created the variable " CollectStar " and I would do that if I play a score of 10 I evaluation of a star , if I have a score of 20 have a rating of 2 stars and if I have a score of 30 have a rating of 3 stars and then set the frame animation. I would also like to know how to insert animations to the buttons and how to insert the text " BestScore " the stars that look like fireworks . Thanks so much

About the stars, you can simply do that :

Rating = CollectStar / 10

on the buttons, u can create them as sprites, and add the animations you want. same thing for the stars.