There are three primary ways to obtain this specific build, ranging from official update channels to archival ISO files.
Windows 10 2004 wasn't just a maintenance patch; it brought substantial upgrades: windows 10 2004 download
Before hitting that download button, it is important to understand what this version entails. The "2004" naming convention does not refer to the year 2004; rather, it signifies (for the year 2020) and 04 (for the month of May, the fourth month). There are three primary ways to obtain this