GUI not a valid member of PlayerGui help?

You can only acess PlayerGui with client, for this use RemoteEvents with FireClient/OnClientEvent.

example:

-- client
local event = game.ReplicatedStorage.Event

event.OnClientEvent:Connect(function() -- If event got fired
	print("Server fired me!")
end)

-- server
local event = game.ReplicatedStorage.Event

game.Players.PlayerAdded:Connect(function(player)
	event:FireClient(player) -- Here you need to send player you like to fire.
	-- For fire all players use :FireAllClients()
end)

Fixed Script:

> Remember to create the RemoteEvent and change on script to RemoteEvent location.

-- Client(LocalScript), Put in StarterGui
local event = game.ReplicatedStorage.Event -- RemoteEvent Location

local player = game.Players.LocalPlayer -- Get local player

event.OnClientEvent:Connect(function()
	print(player.PlayerGui.Answer.Frame.Q1.Text)
end)

-- Server(Script), Put in ServerScriptService
local event = game.ReplicatedStorage.Event -- RemoteEvent location

wait(3)
if game.Players:FindFirstChild("superbolt999") then
	event:FireClient(game.Players["superbolt999"])
else
	print("I cant found player: superbolt999")
end

Wiki pages:

Remote Events/Functions

Hope it helped :)

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