If you’re looking for the Windows 10 “Spring 2020” or “20H1” or “2004” update, it is available now via the system upgrade tool, or the Media Creation Tool: https://www.microsoft.com/en-us/software-download/windows10
If you want to download the Windows 10 ISO file DIRECTLY from Microsoft’s servers, you can do so by getting the URL from a mobile device: I simply used the Microsoft Edge browser on Android (any mobile browser on any platform will work) to visit https://www.microsoft.com/en-us/software-download/windows10ISO and request links to an ISO in my language. If you download the ISO files from anywhere else, be sure to verify the their SHA-256 checksums!