From a normal Windows command prompt, ctrl+c will stop a node server running.
However, if I start the command prompt via the VS Code menu item Op
In VS Code you will see a pull-down menu at the top of the terminal in the right corner. If you are in a running node app and want to close it or you are "stuck" the pull-down menu should say node. Click the trashcan (kill terminal) next to the list to close the running node app. You should be returned to the terminal unless you have something else running like another node app. Select bash, powershell, etc from the pull-down menu to navigate back to your command line.