[replace] How do I find and replace all occurrences (in all files) in Visual Studio Code?

On the Visual Studio Code Key Bindings page, the section Keyboard Shortcuts Reference has links to a PDF for each major OS. Once open, search for "replace in files" or any other shortcut you might need.

Another way is to use the Command Palette (ctrl/cmd+shift+P) where you can type "replace" to list all related commands, including the one you want:

Replace in Files ctrl/cmd+shift+H