More than like you will have to wait until March/April to find out if you have an appointment or not. Also, don't forget to apply to your Congressman for a nomination.
Most cases, the "top" applicant gets the appointment. And depends on how competitive your nomination category is West Point won't make a decision after the application deadline . More than likely there will be several qualified candidates among applicants nominated by Senators, so West Point won't do an appointment against Senatorial vacancies until the application deadline is past. Of course, there is a small chance that all nominees complete their application well before the deadline. If so, West Point can make an appointment.