Safari browser?
https://support.apple.com/en-au/guide/safari/sfri20948/mac
If you are using some other browser try googling "how to open browser console in ...."
No I am using google chrome, but I did search up what you said and it said "More Tools > Developer Tools. You can also use Option + ⌘ + J (on macOS), or Shift + CTRL + J (on Windows/Linux).", and I tried to do the "More Tools > Dev Tools" and apparently its blocked on the computer I am using for some reason, so that explains it. I'll have to ask the admin of the computer I am using to unblock that, hopefully they do.