"Make me a script for a kill count"

-- server script 
local Players = game:GetService("Players")

local function onPlayerAdded(player)
    local leaderstats = Instance.new("Folder")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = player

local kills = Instance.new("IntValue")
    kills.Name = "Kills"
    kills.Value = 0
    kills.Parent = leaderstats
end

local function onCharacterAdded(character)
    local humanoid = character:WaitForChild("Humanoid")
    humanoid.Died:Connect(function()
        local killer = humanoid:GetKiller()
        if killer then
            local killerPlayer = Players:GetPlayerFromCharacter(killer.Parent)
            if killerPlayer then
                killerPlayer.leaderstats.Kills.Value = killerPlayer.leaderstats.Kills.Value + 1
            end
        end
    end)
end

Players.PlayerAdded:Connect(onPlayerAdded)
Players.PlayerRemoving:Connect(function(player)
    if player.Character then
        player.Character.Humanoid.Died:Disconnect()
    end
end)

for _, player in ipairs(Players:GetPlayers()) do
    onPlayerAdded(player)
    if player.Character then
        onCharacterAdded(player.Character)
    end
    player.CharacterAdded:Connect(onCharacterAdded)
end