Showing [ * ] but not displaying output

What you show in your single screenshot shows the process is still running hence the asterisk being shown.
Beyond telling you to have patience and monitor the busy/ready indicator in the open right corner, we cannot tell you much because you literally provide no more than a title and a single screenshot.
We have no way to tell if any output should come from such cells. No way to tell if your computer has the resources needed to handle what you’ve asked of it. (By the way both of those questions you should have been easily able to answer by troubleshooting with less data and describing the outcome in your post text, if indeed it had turned out to be unusual.)

Please read and follow Getting good answers to your questions.