If you are building your own Speed Simulator and need to script the mechanics yourself, you can use legitimate methods in :
Be extremely cautious when downloading or copying scripts from unverified sources, as they can sometimes contain malicious code designed to steal your Roblox account or personal data. For Developers (Roblox Studio)
Many "Inf Speed" or "Inf Money" scripts found on sites like or Reddit are categorized as exploits by Roblox.
Create a "points" or "speed" folder in ServerScriptService to track and save player progress.
You can increase a player's speed by modifying Humanoid.WalkSpeed within a script.