To do Alt + 7 on Mac in Excel, download and install Accelerator Keys, then press Option, followed by 7.
Command: Search
This is how to do Alt + 7 on Mac in Excel with Accelerator Keys, the native ribbon and alt key shortcut solution for Mac users who get more done with Excel.
Alt + 7 focuses the Search box in the Quick Access Toolbar area. This allows you to quickly search for commands, features, and help content within Excel without using your mouse. Simply type what you’re looking for and Excel will show matching commands and actions.