Wizbux were an underappreciated and short-lived rewards system for making posts on Wizchan in November 2015. You could buy virtual food or "shitposting licenses" in the wizchan store. Although discontinued, users may still check their Wizbux balance by visiting here, and it is rumored that unspent licenses work if you have one.
Wizbux (or bux) may also refer to a living allowance provided by the government as part of a welfare or social security program for the unemployed or mentally impared (or theoretically as part of UBI). It is generally agreed that wizbux is the highest and most desirable form of security a NEET can receive, as such, threads about acquiring wizbux are a common fixture on /wiz/.