I want build full. Flutter firebase app

I want to build a complete application
I would like a price quote for the complete application
Registration and login system using phone number
Language flutter
Price including upload for Google stor
And apload for apple store
The application language is one
Create and connect AdMob
Create a database using Verbis only
Full explanation according to the link

https://youtu.be/u5bkLBXLWdg?si=ROu8heC_21OQBD8n