You can show File Path on Title Bar in Excel and Word by creating and running a Macro - and even in Quick Access Toolbar too. This post explains the process in detail.

To show/hide or restore a missing toolbar in Microsoft Excel, click on the Ribbon Display Options button in the top-right corner of the program window. Then click on Show Tabs and Commands option.

With seamless storage built into the Office interface, it's easy to lose sight of where you're saving files. Here's a trick to add a control to the QAT so you always know the current file's location.