I bought a used macbook pro that came with xcode, this means I can develop Apps but to publish in App Store needed pay developer fees? Or must pay these fees from now?
All you have are the basic tools. Without a paid program in your name, you cannot distribute apps to the store.
See iOS Developer Program
you mean i can run apps on my macbook or ipad, and keep these apps, in these devices for my own everyday use, but can not do only that you say???
You can only run apps in the simulators.
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