Create a points system for my website-CPA system

I have a website that I manage through [login to view URL] but I don't know how to add a point system. Will I have to take my website and create it with word press or can I integrate this into my current site. I want to be able to offer points for actions taken on my site. Can someone help me create a point system and tell me what I need to do next. I will be able to pay more later once I have the completed project.