I'he just Private status in my publish menu. How can i change to PUBLIC for publish?
You should have a Professional or an Enterprise DPS subscription to publish as Public.
I want to build an app using Single Edition License. So it's ok for me? I'll publish private and export than use wiever builder?
Yes, you will have to export the Folio from Folio producerand then use it in the Viewer builder to build your application.
Here are some learning resources which will help you through the publishing process :
Digital Publishing Suite Help
Digital Publishing Suite Getting Started
Free DPS Tips app in Apple Store (or search for "DPS Tips" in any mobile device store)
DPS Authoring Tutorials
DPS Learn Channel on Adobe TV