Well basically i have a game where multiple leaderboards are employed at any given moment. The problem is when I make a trigger that applies only to lets say player 1 that displays a custom score and a label it will display it for every player. I'm wondering if there is a way around this or some sort of mod I could use.
EDIT: and what i mean by just one player is not that it only displays the score of just one player but only one player can actually see the leaderboard (even though he will see the score for every other player).
None.

We can't explain the universe, just describe it; and we don't know whether our theories are true, we just know they're not wrong. >Harald Lesch
I'm not sure if this could work as leaderbords tend to delay very much and my idea depends on instant execution.
Make the first trigger of every player that shouldn't see a leaderboard to disable it or show useless info. I think you cannot completely disable it. And the first trigger of the correct player is changing the leaderboard to what it's supposed to be.
If that's not enough or not working ask in the modding section.
Yeah, the delay on that would not make it work, and that's also assuming that for some reason when the trigger runs for the player, they see it first, which is not true. Basically, no, there's no real way to actually use a leaderboard for each individual player, you can use minerals or have some other trigger to show score, but there's no normal way of using the leaderboard.
None.