On a wiki, I have seen a number and 1 singular bracket on the ends like this [#] does that link you to a heading, or what does it do? here's a picture
That's a reference. It gives a source.
So what does it link to, cause I want to know, so I can use it if i have to
It links to a citation, which is placed at the bottom of the article.
See this page for more help
https://community.fandom.com/wiki/Help%3ACite
What do you think?