No, that’s not correct English.
the sentence is simply bad.
Native speakers would stop and go “huh?”

The correct sentence is:
“Are we friends?”

Why?
1. English questions use inversion (verb before subject):
• ❌ We are friend?
• ✅ Are we friends?

2. “Friend” must be plural here:
• When talking about two people, you say friends, not friend.