Any major build higher than 19044 is considered to be Windows 11. Windows 10 19044.1566 is the current Windows 10 build. If you go the route of installing that expired build, you should know that it's impossible to downgrade your build to a lower number without a clean install. There are no current Windows 10 unexpired builds higher than 21364, which means installing a newer build is impossible. You certainly can try and upgrade your installation here. If you still want to try, despite a clear warning that you will be notified the build has expired and will be immediately and forcefully upgraded to the current Developer Windows 11 Insider Build. If you want the features contained within that particular build, you would have to upgrade to Windows 11 21H2. It has since expired and cannot be legitimately installed.

Windows 10 Build 21364 was a Windows 10 Insider Preview build released in April 2021. You are already on the current Windows 10 build.

How can I update to the latest build 21364?

Update windows 10 to latest version