At the end of the set rounds, whoever wins the game

I would have a question in the event of a game about whether at the end of the set rounds no one has won but there are alliances to whom the victory is awarded?
Who has the most SP as a single player or the alliance that has the most SP?

For example players in an alliance vs another 2 allied players, the player with most sp from your or their team wins, the rest loses the game