Simple Speed Script

local screenGui = Instance.new("ScreenGui", game.Players.LocalPlayer:WaitForChild("PlayerGui"))
screenGui.Name = "WalkSpeedChanger"

local frame = Instance.new("Frame", screenGui)
frame.Position = UDim2.new(0.35, 0, 0.35, 0)
frame.Size = UDim2.new(0, 250, 0, 150)
frame.BackgroundColor3 = Color3.fromRGB(35, 35, 35)
frame.BorderSizePixel = 0

local textBox = Instance.new("TextBox", frame)
textBox.Position = UDim2.new(0.1, 0, 0.2, 0)
textBox.Size = UDim2.new(0.8, 0, 0.3, 0)
textBox.PlaceholderText = "Enter WalkSpeed"
textBox.Text = "100"
textBox.TextScaled = true
textBox.BackgroundColor3 = Color3.fromRGB(60, 60, 60)
textBox.TextColor3 = Color3.new(1, 1, 1)

local button = Instance.new("TextButton", frame)
button.Position = UDim2.new(0.1, 0, 0.6, 0)
button.Size = UDim2.new(0.8, 0, 0.25, 0)
button.Text = "Set Speed"
button.TextScaled = true
button.BackgroundColor3 = Color3.fromRGB(0, 170, 255)
button.TextColor3 = Color3.new(1, 1, 1)

-- so you can set ur speed
button.MouseButton1Click:Connect(function()
	local speed = tonumber(textBox.Text)
	if speed and game.Players.LocalPlayer.Character then
		local humanoid = game.Players.LocalPlayer.Character:FindFirstChild("Humanoid")
		if humanoid then
			humanoid.WalkSpeed = speed
		end
	end
end)
-- so its draggable
frame.Active = true
frame.Draggable = true