Learn the steps to get the location of Outlook data file
To get the location of the folder where Outlook Data files(.pst & .ost) are saved is to follow the given steps:
1) Click the File tab, in Outlook.
2) Then click Account Settings and then click Account Setting.
3) Click an entry on Data Files and then click Open Folder Location.
Data files created using Outlook 2013 and Outlook 2016 are saved on the system in Documents/Outlook Files. While if you move to a system that already has data files created using Microsoft Office Outlook 2007, then those files are saved in a hidden folder at drive:\Users\user\AppData\Local\Microsoft\Outlook