Add a 'when this sprite clicked' block, then make a new variable called "Clicks", below the 'when this sprite clicked', block insert a 'change [variable] by [selected number]
For a more complete effect, you can add the script on the right for additional hover effects. After that, your game is complete. Now, you can dive into the clicker game tutorial, but it's also available as a video tutorial. Bye! Enjoy your game making!