The wallet.dat file containing all your private keys, transaction history and address book is located in the Scash data directory. This the same place where the configuration file Scash.conf should be stored, and the blockchain data kept. How to find this directory:
It should be in the following place:
%APPDATA% is an environment variable usually point to directory which can be opened in Explorer with the path like this: C:\Users\<YourUserName>\AppData\Roaming\
You should enable showing of hidden folders in Explorer before you can navigate there or just paste %APPDATA% into Explorer navigation bar directly.
The path is:
It is not displayed by default in most Explorer-like applications, so you should change application options to view it.
The required directory should be accessible by the following path:
The simplest way to navigate into this folder it is to run Finder, then select in main menu "Go", then "Go to Folder..." and enter ~/Library/Application Support/Scash