Zero. H1B, by definition requires a specialty and a sponsor who can fire you (I don't know the exact phrasing but this is what prevents someone with an H1B from starting their own company)
Before I proceed...are you sure and how sure are you? Would you like to entertain a bet against that nonsensical zero of yours, as if you actually know this.
I am always fascinated by deducive ignorami who pretend to have done the research, like yourself.