In case i Build mobile app. on bubble.is platform. How can i publish is it and sell it on the online stores?
If you do a search on the forum for this you will find many answers
You can contact with app stores
If you are talking about selling the app itself, which I think you are, then there are many ways. Front-end, If you have a user system, you could add the person you are selling it to, then promote them to some sort of admin ‘rank’. For back-end, you can either buy a plan for your app, then add a collaborator, or you could transfer ownership entirely (which I do not recommend). If you are talking about selling something on your app, there are many payment plugins out there. Hope this helps.