From The GPRO Wiki
The Nations Trophy is an informal competition to find which Nations managers can score the most points.
You do not need to enter this, as you are entered automatically though your choice of Nation in your profile.
The Nation Points you score are based on the points earned in races, with a multiplier applied depending on which level of the game you are at.
|Division||Multiplier||Points for winning a race|
At the end of the season the highest scoring manager from the winning Nation, who is not in negative balance will earn a seasons worth of supporter credits (8.5€) and there is also an achievement which covers this.