Find the passenger reference number (PNR) or Booking Reference in your booking confirmation - it's a string of six characters, such as: ACQ167 - and use it, together with your surname, to look up your reservation on the Air France website at https://wwws.airfrance.us/trip

This will show you your baggage allowance (and allow you to do other stuff, such as selecting a seat (some/all may require payment)) and you can print out your ticket or have it emailed to yourself. It's always a good idea to print out the airline's version of your itinerary and carry it with you.

You can also check the baggage allowance for your journey here; just fill in your origin and destination airports. (If the final destination served by Vistara isn't listed, then just use the airport where you will transfer from Air France to Vistara).

It seems that for all itineraries between the US and India, every economy ticket comes with an automatic checked baggage allowance of 2 bags. Neither bag should weigh more than 23kg/50lbs; pay attention too to the dimensions of the bag. If either or both bags are over this weight, or larger in any dimension than the allowed dimensions, there will be excess fees payable regardless of the "2 free bag" allowance.

You do not need to re-confirm/check with Air France that the luggage allowance is what is stated on your ticket; print the ticket and carry it with you.