How to get the player from a server script?

There are multiple ways to get a single player using server. Remote events and in pairs loops. I'll show you both ways.

In Pairs Loop

for _, v in pairs(game.Players:GetPlayers()) do

end

PlayerAdded Event

game.Players.PlayerAdded:Connect(function(plr)

end)

Remote Events (Note: You should only use Remote Events IF you're gonna use GUIs and stuff, so I do not use recommend using it.)

--Local Script--
local remoteEvent = game.ReplicatedStorage.RemoteEvent

remoteEvent:FireServer(game.Players.LocalPlayer)

--Server Script--

game.ReplicatedStorage.RemoteEvent.OnServerEvent:Connect(function()

end)

Also you can use game.Players:GetPlayerFromCharacter() on certain events such as the Part.Touched event.

A serverscript doesnt work local, try it in a localscript.

game.Players.LocalPlayer