Facebook groups - application

Good morning,

I would like to create an application that would work on the basis of extracting entries from groups on FB along with responses and creating subpages on this basis. It could function as a forum (entries as topics / posts to the database). Before posting on the site, entries would have to be moderated / accepted. Names and names, of course, are subject to anonymisation.

I am asking for a price for the application (+ page), along with a description of the creation technique.

greetings