Fly gui

-- Fly GUI (Mobile + PC)

local player = game.Players.LocalPlayer
local char = player.Character or player.CharacterAdded:Wait()
local hum = char:WaitForChild("Humanoid")
local root = char:WaitForChild("HumanoidRootPart")

local flying = false
local speed = 60

-- GUI
local gui = Instance.new("ScreenGui", player.PlayerGui)
gui.Name = "FlyGui"

local frame = Instance.new("Frame", gui)
frame.Size = UDim2.new(0,200,0,120)
frame.Position = UDim2.new(0.4,0,0.4,0)
frame.BackgroundColor3 = Color3.fromRGB(30,30,30)
frame.Active = true
frame.Draggable = true

local title = Instance.new("TextLabel", frame)
title.Size = UDim2.new(1,0,0,30)
title.Text = "Fly GUI"
title.BackgroundColor3 = Color3.fromRGB(50,50,50)
title.TextColor3 = Color3.new(1,1,1)

local flyBtn = Instance.new("TextButton", frame)
flyBtn.Size = UDim2.new(0.8,0,0,40)
flyBtn.Position = UDim2.new(0.1,0,0.4,0)
flyBtn.Text = "Toggle Fly"

local close = Instance.new("TextButton", frame)
close.Size = UDim2.new(0,30,0,30)
close.Position = UDim2.new(1,-30,0,0)
close.Text = "X"

close.MouseButton1Click:Connect(function()
	gui:Destroy()
end)

-- Fly system
local bodyGyro
local bodyVel

local function startFly()
	bodyGyro = Instance.new("BodyGyro", root)
	bodyGyro.P = 9e4
	bodyGyro.maxTorque = Vector3.new(9e9,9e9,9e9)
	bodyGyro.cframe = root.CFrame

	bodyVel = Instance.new("BodyVelocity", root)
	bodyVel.velocity = Vector3.new(0,0,0)
	bodyVel.maxForce = Vector3.new(9e9,9e9,9e9)

	while flying do
		local cam = workspace.CurrentCamera
		bodyGyro.cframe = cam.CFrame
		bodyVel.velocity = cam.CFrame.LookVector * speed
		task.wait()
	end
end

local function stopFly()
	if bodyGyro then bodyGyro:Destroy() end
	if bodyVel then bodyVel:Destroy() end
end

flyBtn.MouseButton1Click:Connect(function()
	flying = not flying
	
	if flying then
		startFly()
	else
		stopFly()
	end
end)