How do i make a kill button like in among us?

like in among us u click the button or press q how do i do that

I don't really have a code example for this but I can explain something you could try,

if you make a script that when you press Q its checks whats the closest player to the player pressing Q then check the distacne between those 2 players and if the distance is less then f.e. 10 the the Health of the other player = 0