People love taking shortcuts because it’s the easiest way to do things faster; computers are no exception. Shortcuts, particularly ones performed by keyboard, can save you hours of time once applied properly. Learning keyboard shortcut saves you a lot of time; you’ll definitely notice a boost the productivity because you’re not unnecessarily reaching for a mouse all the time.

I’ve rounded up some of the most common DBA customized keyboard shortcuts in SSMS. The same set of rules can be applied to define one which you feel is most important in your day to day activities. Stay on board and you’ll be mastering these tricks in no time!
https://www.sqlshack.com/custom-keyboard-shortcuts-in-sql-server-management-studio-ssms/

Happy Learning!!