Collected Star Display On Level Select Screen

Hi I created Level Select screen with Star display at the bottom of each level.

When I Click on Respective Level for Ex. Level_1 then I jump inside level 1 inside level_1 when I clear game I earn star for Ex. i earn 2 Star

Then My question is How can I save and display those Two Star( or respective level stars) below levels of Level select screen

I hope please someone Guide me I lost path I just want Logic Not code a clear logic