I will update this post as I found shortcuts in vscode that I consider might be useful :)

Select and edit text based on a regex

1. Ctrl+F : Open find widget.
2. Alt+R : Turn on regex mode.
3. Input search text : Regex text or normal text.
4. Alt+Enter : Select all matches.
5. Left arrow : Adjust cursors. (Ignore this step if you don't want to edit the selected text.)
6. Edit text : Do what you want.(Ignore this step if you don't want to edit the selected text.)
7. Shift+Home : Select modified text.(Ignore this step if you don't want to edit the selected text.)
8. Ctrl+C : Copy selected text.
9. Ctrl+N : Open a new tab.
10. Ctrl+V : Paste.

Compare files

1. Open the first file to compare.
2. ⌘ + ⇧ + P to bring the menu
3. Type: Files: Compare Active File With...
4. Select the file to compare to.