For the games themselves, the scoring you want you would need to put in to the "points for playing box". If you have a season set up, you need to go to the "Overall Score" and put in the sum(scores) there, and that should clear it up. If that's still not clear, let me know - I'll be up for a bit yet tonight, but in either case, if I need to I'll go through it and provide exact step-by-step with the program running and explain it as I'm going along in a post.
Edit - To answer, the stats tab is a view, if you edit the season, the box that comes up would be a view (but neither are a screen that will display, unless you only use the one monitor). Where you enter the sum(scores) into is a view, but in of itself, sum(scores) is a formula, that looks at all the points a player has earned for the tournaments that pass the filter, and totals them up.