@martinbaker2727 Mouse issues in ScummVM were resolved with the release of version 2.0. As you are running an old version of RetroPie which runs on Jessie, for which support is no longer available, I would recommend that you start with the latest 4.4 image.
A virtual keyboard should be available in the latest version of ScummVM. It can be activated by button 7 on your controller, which, I understand, is the Guide button. If the virtual keyboard is not available, then try installing ScummVM from source.
The ScummVM in-game menu is only available with a button press for Lucas Arts titles. For other titles, it can be accessed by pressing CTRL+F5. According to the manual, in Zork The Grand Inquisitor, there are options to save, restore and quit in the Center Bar, accessed by moving your cursor to the top of screen.