The current bank exchange rates for the ZWL$ today are as follows:

USD = ZWL$15.9788 [18/11/2019]
ZWL$ = RAND0.9199 [18/11/2019]

Data according to the Reserve Bank of Zimbabwe

Black Market Rates:

USD = ZWL$22.20 zimrates
USD = ZWL$22 zwl365
USD = ZWL$21.70 bluemari
USD = ZWL$15.90 cash zimrates

– Marketwatch