Key shortcut for “Scale”

What keyboard shortcut were you using, and which command was it for in the menu? If you can show a screen shot of the pulldown menu where you are now having to choose Scale, that would help us figure out what you’re seeing.

Because nothing has changed in that area. The traditional command Edit > Transform > Scale never had a default keyboard shortcut (it was just as easy to use the Free Transform shortcut which is still there), so it is possible that you assigned a shortcut to Scale in the past and it somehow got reset to default (like were Photoshop preferences recently deleted)? Or maybe the Photoshop workspace got changed to one where the menu layout/shortcuts are different? If that happened, choose one of the default workspaces.