There are no 64-bit versions of Windows XP Home or Windows XP Media ... If you're running Windows XP, chances are it's 32-bit ...

When upgrading from Windows 7 or 8.1, Microsoft delivers Windows 10 with the same CPU word size (32 or 64 bit). For example, a 32-bit Windows 8.1 machine will be upgraded to a 32-bit Windows 10 ...

[Gary] clearly breaks down the 32-bit situation by operating systems such as Linux, Windows, MacOS, Android, and iOS, and how all of these have been transitioning to 64-bits over recent years.