If for whatever reason you need a Windows 10 ISO, normally you take the MediaCreationTool from Microsoft.
However, with Windows 10 all versions MediaCreationTool from BAU, it’s possible to download the newest or a lot of older Windows 10 versions, thanks to a script from BAU.
With this new MediaCreationTool.bat you can choose between:
Windows 10 1507, 1511, 1607, 1703, 1709, 1803, 1809, 1903, 1909, 2004 or the current Windows 10 20H2.
If you like to make a bootable Windows 10 Installation USB or DVD to install your Newly downloaded Windows 10.ISO, you can use this tiny tool called Rufus to do so.