How can I set up a profile page and people can submit their ideas

Hi I am new and working on a project called Impresso.
I am amazed with expo work.But having few issues setting everything up.I have created project on my local pc successfully.

Changed few things here and there.

I would like to know few things.Hope someone can help me.

I have installed fire base via npm and added the API codes to Appentry.js file.

How can I make profile page with it?

[Redacted because I misunderstood the question.]

No I meant actual profile page like user can login and have their profile.
and can submit their story etc…

Like Facebook