For a permanent activation tied to your hardware, users often use GitHub-hosted scripts that utilize Hardware ID (HWID) activation. This method typically requires running a PowerShell command directly from the source to trigger a popup tool.
If you already have a licensed version of Windows 10 Pro and simply need to find your key, use these official methods instead of downloading unknown files: Recover and find Windows 10 product key on my computer windows 10 pro activation key 64 bit txt