trophies system

Hi everyone I have a problem with my game I would like to make a trophy system practically the player when he finishes a game (won) can win from 10 to a maximum of 25 trophies if incece loses lose from 15 to 35 trophies … how can I make a scipt so ??

What you tried?

I watched a tutorial but I didn’t find anything on the surface … the trophy system is like that of clash of clans

Trophies can be just set as Boolean in array / list.
Nothing special.