If your passport is ready for collection, you will be notified. Your online passport status will read: “ready for pick up.” If this message is displayed on your passport status, then it means that you can go visit the required visa collection center to get your passport.
The US Embassy/Consulate does not assist visa applicants to deliver their passports after completion of their Visa application processes. The US usually advises visa applicants not to contact them about the delivery status of their passports.