Creating a FE on touch function script and it has an error..?

Yeah here you go this is a fixed version:

see the problem was when your firing to the client you where sending it to a object other then the actual player.

Just did a update Try this:

Server:

local Players = game:GetService("Players") -- ignore

local welcomePlayerEvent = Instance.new("RemoteEvent")
welcomePlayerEvent.Parent = game.ReplicatedStorage
welcomePlayerEvent.Name = "HenryShopEvent"

function onHit(hit)
	local Player = Players:GetPlayerFromCharacter(hit.Parent)
    if Player then
        welcomePlayerEvent:FireClient(Player,'Welcome')

    end

end

script.Parent.Touched:connect(onHit)

Quick Client script i made :

local remote = game.ReplicatedStorage:WaitForChild('HenryShopEvent')
remote.OnClientEvent:connect(function(...)
	local Args = {...}
	if Args[1] == 'Welcome' then
		print('Welcome')
	end
end)