DS-160 is just a supporting document for visa. It is not a

application for the booking a visa appointment date. If you

want to book a visa appointment please follow the below like

with the DS-160 form bar code number:

https://www.vfs-usa.co.in/ApplnForms/RegularUser.aspx

After going into the website please select a link

accordingly and proceed. After filling the DS-160 there is

no guarantee about when you will get the visa appointment.

It depends on availability of visa appointment date. You can

also check the visa availability in the below site.

https://www.vfs-usa.co.in/USIndia/visaappointment.html#earliest

On booking the visa appointment date you will immediately

get a conformation letter about the visa appointment. Please

take a print out of both visa appointment conformation

letter and DS-160. I am not sure if you have made the

payment for visa appointment. Just in case if you did not

make the payment, you can make it HDFC bank and you will get

a receipt with bar code. Also keep the code safe. You need

visa appointment letter, DS-160 form and HDFC receipt along

with the required documents for visa while attending the

visa interview.