Hi WaynePerry2,
Under normal conditions, GMAT Test Centers are generally open throughout the year - meaning that you could potentially take the GMAT on almost any day of the week. Obviously, Covid-19 has led to some Centers closing (or offering fewer open appointments) in the short-term, so the availability of any of your local Test Facilities might vary. Thankfully, there is also the option to take the At-home version of the GMAT from an external location (such as your home) - and that option provides a far greater opportunity to choose a specific day and time for your Exam that best fits your schedule.
From your initial post in this thread, it sounds as though you are interested in taking the GMAT sometime soon.
1) How long have you been studying?
2) How have you scored on your practice CATs/mocks?
3) What is your Goal Score?
GMAT assassins aren't born, they're made,
Rich