... Well, why?
1. 32-bit apps run perfectly fine on a 64-bit OS
2. Do you expect a huge performance boost if you ran a 64-bit variant of yt-dlp ? Well, this app isn't, say, a browser with a voracious RAM appetite; I've been using it on a 32-bit OS myself for close to a decade, never ran into memory issues...
3. The one practical advantage of running it under 64-bit, the ability to install the curl_cffi optional dependency (necessary to circumvent CloudFlare's antibot/AI filters on many popular services) is nullified under WinXP, because the lib it uses internally (curl-impersonate) requires at least Win7(8?) x64 ...
In any case, this is probably a "no-can-do", because @nicolaasjan relies on a third-party CPython-3.11-win32 implementation to compile his 32-bit WinXP-compatible builds; specifically, this was a py3.11.4 "assembly" kindly offered by our Ukrainian member cmalex , which uses several DLL wrappers from OCA/Wine/ReactOS and it was provided solely as a 32-bit variant (which should cover probably 95% of XP users ) ...
Regards.