Kick script

-- You need three things:
-- 1. A ScreenGui with a TextBox named Username, another TextBox named Reason, and a  button named Kick
-- 2. A RemoteEvent named KickPlayer
-- 3. 2 Scripts

-- Add a LocalScript into the gui

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RemoteEvent = ReplicatedStorage:WaitForChild("KickPlayer") -- Change it to the name of the remote event
local button = script.Parent.Kick
local player = script.Parent.Username.Text
local reason = script.Parent.Reason.Text

button.MouseButton1Click:Connect(function()
        if game.Players:FindFirstChild(player) then
            RemoteEvent:FireServer(player, reason)
        end
end)

-- Server Script

local ReplicatedStorage = game:GetService("ReplicatedStorage")
local RemoteEvent = ReplicatedStorage:WaitForChild("KickPlayer") -- Change it to the name of the remote event

RemoteEvent.OnServerEvent:Connect(function(player, username, reason)
        game.Players:FindFirstChild(username):Kick("\nYou were kicked for\n"..reason.."\n")
end)