https://wccftech.com/how-to-download-windows-10-may-2020-update-before-the-public/

Microsoft released Windows 10 May 2020 Update, version 2004, to the Release Preview ring earlier this week. The new version of the operating system will go through the RP ring for a few weeks before being released to the public. However, if you don't want to wait for Microsoft to make this upcoming version of Windows 10 available to the public, you can definitely get your hands on it earlier than everyone else.

The Windows maker tests new features and improvements through its Windows Insider program. While that program isn't for everyone since Preview Builds do bring problems and performance issues, the most stable ring known as the Release Preview ring only gets an update when it's near-ready for the public. Since Windows 10 May 2020 Update RTM Build has now hit the Release Preview ring, you can now simply sign up for this ring to avoid waiting for the public announcement and phased release.