I have created an application using Android Builder and I want to publish it and it will be downloaded and used by more than 10,000 people. Will the application work for this number of users or is there a specific number of users?
No, it is independent of the amount of users who can use the application. Millions of users can access your application, however if you use a server or database, you must be verified every time the database quota changes. In short, no problems were encountered while utilizing the application, whether there were 10,000 or a million users.
The application that I created is an application for my personal website. When open the application, the page of my website appears, and it has a notification feature via OneSignal. So is there a problem with the number of users?
Take note of this. The application built with Android Builder is a completed application, just like other platforms such as Android Studio, so there are no concerns while using it. The application can be used by any number of users without any issues.