How to detect the amount of circles created

I'm trying to make a small game that has to do with being asked to click for a random amount of circles. How can I code this by being able to know how many circles the player has created? I want to be able to print out text asking for a random number of circles. Then the player would be able to click for the correct number and submit it with a button or some sort. Sorry if this might sound confusing!

Right now, I'm just stuck on how to figure out how I'll be able to know the amount of circles the player clicks.