Do you perhaps mean Office 365 (though it’s now called Microsoft 365)? Windows 365 is what they offer for businesses and large enterprises to use cloud-based PCs. Microsoft 365 (formerly Office 365) costs ten bucks a month or a hundred bucks a year for email and the Office suite. It also includes one terabyte of cloud storage.
Or for $130 a year, you can get a Microsoft 365 Family plan for up to six users, though you can only sign into five computers at a time. Each of the six users gets one terabyte of cloud storage.