Membership site using point system

So basically I want to create a site where users can buy points which I will provide manually to their account while they buy it through my patreon page.

And I want to add products on my website that users can buy using the points which plugin or methods can I use for this purpose

For this feature, you have to track the payment in your Patreon page and then store it in a database then you implementing the simple business logic of sell mean point substract point and Patreon buy mean add point