Okay -- I got it...
For those struggling like I was, this is the website that finally made things click for me:
https://www.cybrary.it/blog/0p3n/howto-manually-sql-injection-using-union-select-method-guide/
It will time out after about 10-15 seconds and ask you to login. What I did was screen cap my screen so that I could read it slowly and digest everything.
Following this, together with reading the assignment in Immersive Labs and following it step-by-step, I was able to do the correct syntax in order for some results to come up.
This was very difficult for me, but I finally got it. Thank you so much for your time and effort to help.
I assume you are looking at some sort of pcap file so just export the file and open it up... If you have Wireshark here is a link that deals with all the export commands: -
https://www.wireshark.org/docs/wsug_html_chunked/ChIOExportSection.html