We've gotWhile this site's help center could use a bit of an update on this matter, I feel that it's important to point out that we have a tag for asking questions about this site. It's the meta tag.
You can use this tag in combination with others, for example, reopen-closed, if you were inquiring as to getgetting a closed question on this site reopened. Here's a relatively recent example of this in action.
Typically, you should only ask questions about getting a specific question reopened on this site if you've exhausted the typical routes: Editing your question so that it's more likely to be reopened, and letting the reopen review queue item that was created as a result of that edit to receive an outcome.