Not really offhand at the moment (been ill, doctors, surgeries, all that fun stuff).
Basically you'd have a new field in the member data db for the points, then you'd have it so you can adjust it in their profile as an admin, then you'd grab that data when building posts and format it however you want in the post template.
With any luck someone will be able to help you by the time I'm able to be of any real good to anyone