"can u make it so when u do this /Sonic command and it makes a noise and can u make a whitelist for it. tell me were to put it and if I should make it a local script or a normal script, I want to connect it to a script. and make sure like 4 has a end"

Sure, here is a server script that will create a chat command "/Sonic" that plays a sound. It also has a whitelist of player names that can use the command.

```lua
-- Server script
local ChatService = game:GetService("Chat")
local SoundService = game:GetService("SoundService")
local sound = Instance.new("Sound", SoundService)
sound.SoundId = "rbxassetid://YourSoundIDHere" -- replace with your sound ID

local whitelist = {"Player1", "Player2", "Player3", "Player4"} -- replace with the usernames of the players you want to whitelist

local function onChat(player, message)
    if message:lower() == "/sonic" then
        for i, v in pairs(whitelist) do
            if player.Name == v then
                sound:Play()
                break
            end
        end
    end
end

ChatService.Chatted:Connect(onChat)
```
You should place this script in ServerScriptService. Be sure to replace "YourSoundIDHere" with the ID of the sound you want to play, and replace the names in the whitelist table with the usernames of the players you want to allow to use the command.