Hello, and welcome to Fandom.
One reason you cannot edit that specific page at the moment is because your account is new. When your account exists for at least 4 days, you gain the Autoconfirmed right, which allows you to edit pages protected from users without the right. The page could also be protected so only administrators and above can edit the page. You'll need to link the page you want to edit here if you want a more definitive answer.
In either case, you cannot edit the page, and you want someone who can edit the page for you. Here is what you do.
- Visit your wiki
- Look at your URL and see what comes after /wiki/
- Replace whatever comes after /wiki/ with Special:Listadmins (if correct, you should view a page similar to that in the link)
- Click "wall" underneath any administrator's username. You should message the one that most recently edited.
- Ask the admin you chose to correct an error on the page you can't edit.
Hope this helps!