Hey Nushrat, setting up Chrome driver with Selenium is an easy task for Windows OS, but in MacOS you have follow this procedure:
Download the Chrome drivers for MAC from here: http://chromedriver.storage.googleapis.com/index.html?path=76.0.3809.68/
Now, in MAC navigate to one directory called /usr/local/:
In the above folder, check if bin folder is there or not. If not, create a bin folder and copy the driver in /usr/local/bin :
And that's it. you have configured the chrome driver for Selenium. The good thing here is that we don’t have to remember the path variable like webdriver.chrome.driver in Windows.