So the mall opens at 6am but is that every store in the mall?

The mall is open for people to walk at 6am but stores do not open until 10 am

Most

They should

I believe the mall opens at 6am but each store has there own hours of operation.

Yes

95% of them

No the stores have different timings

I'd call the store you want to visit before going. Each store may have it's own independent time of opening.