You can't change the size of the top menu bar in TurboTax. 

You can try these steps for Windows settings, which might help:

If the top menu buttons (File, Edit, View, etc.) are still too small, you need to tell Windows to "stretch" the program so it's easier to see.

Close TurboTax.

Right-click the TurboTax icon on the desktop and select Properties.

Go to the Compatibility tab.

Click the button that says "Change high DPI settings."

At the bottom, check the box: "Override high DPI scaling behaviour."

OR

In the dropdown menu below that, select "System (Enhanced)."

Click OK and restart TurboTax. This usually "pops" the menu bar into a much more readable size.

Go to Start > Settings > System > Display.

Under Scale & Layout, increase the percentage (e.g., from 100% to 125% or 150%).

This will make every button and menu in every program (including TurboTax) larger.

Hope this helps!

Thank you for choosing TurboTax.