Stamped H1B, Not yet travelled, can I apply for jobs

I’m having a stamped Visa H1b. can I apply for jobs from India outside my current company.

The ability to transfer H1B without going to US is slightly grey area. If you had stamping, it is likely that you can do the transfer as you were given H1B status by stamping. Again, this is slightly subjective, but it is very likely that you would be able to.