For the robot game, there are multiple missions with guides on how many points they are worth. Each mission, has a different amount of points for completing the mission and what is required to get the points. Here is a chart that shows the amount of points for each run. Also, there are penalties that are worth -5 points each and are not wanted. These are gotten if you interfere with the robot when it is out of base. Usually if the robot messes up then the team will usually get a penalty and then grab their robot and put it back in base. The robot is allowed to be touched when it is in base, but no where else on the mission mat.
Pictures from First Lego League.