Show points add up in a quiz

I am struggling with how to add points to correct answers on a progress bar on each slide. I have 15 slides, each with its own question, and the progress bar on the right side. For each correct answer, five points are added to the progress bar. I can get it to work for one slide, but how do I get it to work on all 15. 

I am trying to figure out how to show or not show the 5 point bar depending on how the individual responded on the previous slide. I'm attaching my quiz/game.

 

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