When will my order of iPhone will be prepared to ship?

From your account you can see and follow the progress of your order, besides when you ordered it you probably have been given an approximate delivery date, if things are not going as expected you can contact Apple Support and check your order progress

This is a user to user forum, no one here can tell you how long it will take. They told you the shipping date is from Nov 16th-21st, there is your answer.