Points are the main reward for completing Maps and Challenges. They are awarded at the end of each and the value awarded varies depending on the difficulty of the task. Currently, there are two types of points, with plans for an additional type coming soon.
FFA Points
FFA Points, often referred to as just points, are the original type of points and the most commonly used. They are awarded upon completing any Maps, except ones in The Valley or on The Board.
Achieving 20 points for the first time will let you gain access to the Blue rank, and therefore Hardcore. Currently, there is no other use for FFA points.
Challenge Points (Tokens)
Challenge Points are the recent second type of points introduced together with Challenges. They are awarded at the end of each challenge, depending on the difficulty of the challenge.
Currently, there is no use for Challenge Points but there are plans to change that in an upcoming update.