The points in the leaderboard come from user activity. 250 points for filling out the satisfaction survey, 150 points for receiving a recognition or a badge, 50 points for giving a recognition or a badge.
The leaderboard is just there to let you know who the star givers and receivers are in the organization. The points in the leaderboard are not reward dollars, they are just a measure of activity.
There are two sets of numbers in the leaderboard: Month-to-date and Year-to-date. They reset at the beginning of each month and year respectively.