The San bushman have not been present in Zimbabwe for a long time. They used to have settlements in the Matobo hills of Zimbabwe, close to Bulawayo and this is a fantastic place to go and see their paintings and old settlements. Very spiritual and beautiful place. That is about 5 hours drive from Vic Falls.
The closest living San settlements today are in Botswana, I think around the Central Kalahari area. Which is a long drive from Victoria falls. The Tsoldilo Hills in Botswana is a world heritage site which also has a lot of San history