Bug with Spotlight Search. How to fix/restart?
Have you checked System Preferences &gt; Spotlight, to see whether Applications are included in the results?

Otherwise, you may need to reindex your Spotlight database.
https://support.apple.com/en-gb/HT201716
Drag the disk &quot;Macintosh HD&quot; onto the Privacy panel of System Preference &gt; Spotlight, and then click - to remove it from the window.