About GitHub Desktop installation
You can install GitHub Desktop on supported operating systems, which currently include macOS 10.15 or later and Windows 10 64-bit or later. If you have an account on GitHub or GitHub Enterprise, you can connect your account to GitHub Desktop. If you're a member of an organization that uses GitHub Enterprise Server and you do not have an account, contact your GitHub Enterprise site administrator.
Downloading and installing GitHub Desktop
Linux is not yet supported