https://wccftech.com/microsoft-begins-phasing-out-32-bit-windows-10/

New PCs will only be able to run 64-bit Windows 10

Starting with the upcoming Windows 10 May 2020 Update, Microsoft will begin the process of phasing out its support for the 32-bit version of the operating system. The May 2020 Update, or version 2004, is already available to the OEMs, developers, and Windows enthusiasts through the Insider program.