I was hopeful that the Cubase 10.5 update might include “locate next measure” and “locate previous measure” commands.
No such luck. I came over to Cubase a couple years ago after three decades of using Cakewalk/Sonar, where I was able to set up such custom key commands. In particular, I really miss being able to back up precisely one measure to lead into an edit. I find using markers or events to be a bit clunky.