No, SugarWOD does not do gym operations (payments, scheduling, accounting, etc). Our experience is that when one company tries to do "all in one", usually the results are somewhat mediocre in each area.
SugarWOD does complement most gym operations systems well though. Virtually all of our customers are using something like MindBody, ZenPlanner, or PushPress to do their back-end work.
You can find more information on why SugarWOD doesn't "do it all" on our blogpost here.