What is the baud rate for Wiegand?
Wiegand doesn't have a baud rate as such. It's an edge-based input protocol where it looks for HIGH to LOW transitions on two different input lines.

There are certain timing requirements, in that you can't send data faster than the receiver is capable of receiving and pulses have to be wide enough for the receiver to read, and there is a minimum time for the gap between messages, but other than that there is no defined baud rate.