True False Variable

What you going on there is two separate things that are not connected together.

You have different states in you Hint 1 box, and clicking it changes those states. (Or it should, but initial state was set uo to something else than Avalaible, so it did not work.)

Then you have True/False variable Hint 1, that reduces the score.

What you are missing is the link between these two. You need some sort of trigger that changes the value of variable Hint 1 as the states of the object Hint 1 change. For example use Adjust variable trigger as follows:

Set Hint 1 to value True

When the state of Hint 1 is Open

This way you can click open the Hint 1 multiple times, and lose the score only once. The way ,you have done this on Hint 3 means that if you click it open again, you lose the points again.