How do I make a score manager know who's triggering?

How would I do the following :

Kill someone a going collectable coin appears and either you or player 2 can grab the coin which triggers the score manager . Let me start by saying I already have the gold coin appearing and it's the causes the score manager to trigger . The issue is I need it to know who collected the coin . Here is the other issue , you can kill your team 2, it's a race to see who can get the most gold coins ,but the issue is knowing how to apply each gold coin. To player 1 or 2. Even if I two players in separate team ,I still want anyone to be able to collect that gold coin . Is there a way to know who collects a gold count and only trigger that one person's score ?