H1B - Travelling outside USA

[elixir86]

I am on H1B currently and my I-140 has been approved.

I am planning to go to India to get married.

I am not sure about how the H1B stamping is gonna go.

Please let me know,
1) What happens if my H1B stamping is rejected? My prospective spouse is a US Citizen.

2) Can I apply for Fiance visa from India? My prospective spouse is a US Citizen.

3) How long does it take for me to get green card from India? My prospective spouse is a US Citizen.