Vážně si to nedokážeš vyhledat?

https://docs.microsoft.com/en-us/previous-versions/office/office-2013-resource-kit/ee681792(v=office.15)?redirectedfrom=MSDN

We recommend the 32-bit version of Office for most users, because it's more compatible with most other applications, especially third-party add-ins. This is why the 32-bit version of Office 2013 is installed by default, even on 64-bit Windows operating systems.

Další zdroj třeba tady:
https://www.michalzobec.cz/microsoft-doporucuje-pouzivat-32-bit-x86-edici-office-2010-1682

Ale ty to vlastně nechceš vědět, ty se potřebuješ hádat.