Building app ?

Hello guys , I finished a small app for my Owen use so I made the app on Mac OS X and I need to use it on Windows machine , what’s the Requirement to make that possible? Thank you

To build a standalone executable you will need to purchase a license
The documentation for building has more information for you:

Or you install the Windows version of Xojo on your Windows PC, transfer your code to the Windows PC, load the code into the IDE, and press RUN.

That should have been obvious.

You need a licence to build apps that run on their own and that you can distribute to others.