From Guild Wars 2 Wiki
The scoreboard panel (standard keymapped under B) keeps track of the points scored by each team during structured PvP matches.
|Player kill||5 points|
|Taking a neutral point||10 points|
|Reviving a teammate||10 points|
|Killing a player while they are capping or protecting||15 points|
|Re-taking a lost point||25 points|