We have to create if it doesn’t exist in the Mac. First we need to search in Spotlight if it doesn't exist we have to create in logged in user profile after creation of this it will not visible because this is hidden file.
Creation of .bash_profile in Mac for this open Terminal.app and enter following text.
For opening of the this file enter below text in terminal
open -a TextEdit.app .bash_profile
This will open a blank text for to enter the text.