how to make software like windows and mac?

Wow. That's going to take millions of man hours to do. You'll need to hire a lot of people who really know what they're doing.

Learn about programming.

Hundreds, perhaps thousands of people created those programs. You need a lot of hours that one person can't have.

You study programming like it was going out of style, then you learn more programming, and then some more, until you can become a systems programmer. When you can write an operating system, then you'll be able to make windows and mac.