Using Impossible innovations, I managed to get a craft that can carry 185 kerbals into orbit in 3 minutes 13 seconds. Assuming you could launch from kerbin for 200 days, which is a total of (200x24x60x60) 17,280,000 seconds, divided by the 3 minute 13 second (193 second) orbit achievement time, allowing for 57 seconds to prepare each vehicle for launch, we have a hypothetical maximum of 69,120 launches, each with 185 kerbals on board, each worth 5 points, we have a hypothetical grand total of 63,936,000 points.