SpeedGui by Gemini

local ScreenGui = Instance.new("ScreenGui")
local MainFrame = Instance.new("Frame")
local Title = Instance.new("TextLabel")
local SpeedInput = Instance.new("TextBox")
local ApplyBtn = Instance.new("TextButton")

ScreenGui.Parent = game.Players.LocalPlayer:WaitForChild("PlayerGui")
ScreenGui.ResetOnSpawn = 

MainFrame.Name = 
MainFrame.Parent = ScreenGui
MainFrame.BackgroundColor3 = .(, , )
MainFrame.Position = .(, -, , -)
MainFrame.Size = .(, , , )
MainFrame.Active = 
MainFrame.Draggable =  

Title.Parent = MainFrame
Title.BackgroundTransparency = 
Title.Size = .(, , , )
Title.Text = 
Title.TextColor3 = .(, , )
Title.TextSize = 
Title.Font = .Font.SourceSansBold

SpeedInput.Parent = MainFrame
SpeedInput.BackgroundColor3 = .(, , )
SpeedInput.Position = .(, , , )
SpeedInput.Size = .(, , , )
SpeedInput.Text =  
SpeedInput.TextColor3 = .(, , )
SpeedInput.TextSize = 
SpeedInput.Font = .Font.SourceSans

ApplyBtn.Parent = MainFrame
ApplyBtn.BackgroundColor3 = .(, , )
ApplyBtn.Position = .(, , , )
ApplyBtn.Size = .(, , , )
ApplyBtn.Text = 
ApplyBtn.TextColor3 = .(, , )
ApplyBtn.TextSize = 
ApplyBtn.Font = .Font.SourceSansBold

 targetSpeed = 
.(()
     .() 
        (()
             character = .Players.LocalPlayer.Character
             character  character:() 
                character.Humanoid.WalkSpeed = targetSpeed
            
        )
    
)

ApplyBtn.MouseButton1Click:(()
     value = (SpeedInput.Text)
     value 
        targetSpeed = value
    
        SpeedInput.Text = 
    
)