Installing windows 7 on Asus B560 Plus

Its not an easy task due to the lack of dedicated OS built drivers from the OEMs to modern hardware devices, dont expect any straight and easy guide for it.
Search yourself on the forum for Windows 7 on modern hardware:

Windows 7 on (ASUS) B560, possible? - Operating Systems / Windows 7/Vista/Server 2008 - Win-Raid Forum (level1techs.com)