H4 to h1b processing with RFE - want to travel india

I am currently in h4 and got selected in lottery for new H1b.Now my case status shows i got RFE.I want to travel to india August last week

My Question is

Can i enter US with my h4

Can i travel to india when H1b is with RFE

If my h1b is approved do i want to go back india for getting stamping

Do i want to ask my employer if i want to travel