Create your mba.com account and log in to it.
Click on the “Register Now” or “View Appointment Details” button.
Select “GMAT Online Exam” and select your preferred appointment date and time.
Once you have finalized your registration, you’ll have to pay a fee of $200 ($75 less than the regular GMAT exam fees) to book the appointment.
Honestly, it shouldn't take you more than 2-3 months.
Follow these steps-
Book your exam dates well in advance
Use practice materials from Manhattan Prep, Kaplan, Magoosh, and GMAC
Watch YouTube videos for tips and tricks
Join various FB groups for exam prep to stay updated
Take as many mock tests as you can
The first thing to do is get in touch with the business school you want to apply to and make sure they’re accepting the scores of the GMAT Online Exam.
If they do, see if you have a quiet room, and the required system settings and writing materials needed to take the test.
For those who don’t have a quiet room or the required settings and materials, we suggest you wait. GMAT test centers have already started to reopen in some of the areas.
This is straight from the Graduate Management Admission Council (the GMAT Test Taker) -
"Our test-takers are our priority and to assist you during the COVID-19 pandemic, we have temporarily waived all exam cancellation, reschedule & score reinstatement fees for GMAT test-center based appointments. If you need to cancel, reschedule your appointment to another date/location, or if you have an existing GMAT score you would like to reinstate to finalize your application, you can do so at no charge."
While a majority of B-schools abroad do need GMAT scores, some universities don't require them and have other parameters for assessing your application. These colleges in the U.S that don't have a GMAT requirement are: