fly script press f

-- LocalScript (StarterPlayerScripts)
local player = game.Players.LocalPlayer
local character = player.Character or player.CharacterAdded:Wait()
local humanoid = character:WaitForChild("Humanoid")
local UIS = game:GetService("UserInputService")
local RunService = game:GetService("RunService")

-- Change walkspeed to 50
humanoid.WalkSpeed = 50

-- Fly variables
local flying = false
local speed = 50
local velocity = Instance.new("BodyVelocity")
local gyro = Instance.new("BodyGyro")
local direction = Vector3.new()

-- Setup fly controls
local function startFlying()
	if flying then return end
	flying = true

	velocity.MaxForce = Vector3.new(100000, 100000, 100000)
	velocity.Velocity = Vector3.new(0, 0, 0)
	velocity.P = 1250
	velocity.Parent = character.HumanoidRootPart

	gyro.MaxTorque = Vector3.new(400000, 400000, 400000)
	gyro.CFrame = character.HumanoidRootPart.CFrame
	gyro.P = 3000
	gyro.Parent = character.HumanoidRootPart

	RunService.RenderStepped:Connect(function()
		if flying then
			local cam = workspace.CurrentCamera
			local moveDir = Vector3.new()
			if UIS:IsKeyDown(Enum.KeyCode.W) then moveDir += cam.CFrame.LookVector end
			if UIS:IsKeyDown(Enum.KeyCode.S) then moveDir -= cam.CFrame.LookVector end
			if UIS:IsKeyDown(Enum.KeyCode.A) then moveDir -= cam.CFrame.RightVector end
			if UIS:IsKeyDown(Enum.KeyCode.D) then moveDir += cam.CFrame.RightVector end
			if UIS:IsKeyDown(Enum.KeyCode.Space) then moveDir += cam.CFrame.UpVector end
			if UIS:IsKeyDown(Enum.KeyCode.LeftControl) then moveDir -= cam.CFrame.UpVector end

			moveDir = moveDir.Unit * speed
			if moveDir.Magnitude ~= moveDir.Magnitude then
				moveDir = Vector3.new()
			end

			velocity.Velocity = moveDir
			gyro.CFrame = cam.CFrame
		end
	end)
end

local function stopFlying()
	flying = false
	velocity:Destroy()
	gyro:Destroy()
end

-- Toggle fly with F key
UIS.InputBegan:Connect(function(input, isTyping)
	if isTyping then return end
	if input.KeyCode == Enum.KeyCode.F then
		if flying then
			stopFlying()
		else
			startFlying()
		end
	end
end)