Kenra, your original post was some time ago, though thought I'd add a comment about what was asked. First, it looks like an interesting idea! And Yes, it looks very possible to create.
It would use a variable for the Points. You could set it up by clicking the black "x" in the Triggers panel, set it's type to Number, and have it's initial value set at 0 (to start out with). Then, as users make the different choices, you'd need to add different Triggers there to add (or subtract) the different Point amounts. For example, create a Trigger, set it's Action to "Adjust Variable", and select the variable made previously for the Points. For the Operator, select the equal sign ( = ), then select "Value" and in the box next to that is where you'd enter the number of points it gives (e.g. 100). Then select "When" (which action causes it) to add that amount of points. For example, when "User clicks" an Object (choose an image of your choice in that drop-down).
That's the basic idea behind how to add points, and use a variable to store how much the User currently has. There are likely other ways of setting it up too though that's the way I'd approach it. Also, one other thing - to actually display the point totals on the screen, you'd take the name of the variable you originally created and place it in a text box in the screen layout. Surround the variable name between two "%" symbols in the text box (For example: %Variablename% ).
Again, you had a good idea. Hopefully you've kept thinking about it!
Melissa, also very good game! It has a part which uses reflexes, in addition to the commonly used question section. I assume you used Storyline's animations for that part, and has some Triggers set up for clicks on the images. The mix of interactivity, and the questions was good. Well done.
So many good ideas for this topic in general.