In https://meta.stackexchange.com/help/reopen-questions, it is mentioned:
If you're simply unsure about the validity of the closure, the best place to ask is on the community's meta site. Asking in the meta site allows those who took the action to comment, and will help others to learn about the issues being discussed. You can find a link to a site's meta in the two place in every site's top bar: under the "help" menu in the upper right, and in the Stack Exchange site switcher in the upper left.
Let's say that a question has been closed in Meta Stack Exchange and the OP is unsure about the validity of the closure. The OP read the aforementioned help center article and will start wondering what is the meta site of Meta Stack Exchange.
AFAIK, there is no meta site of Meta Stack Exchange.
I request someone to change the help center article content to something more appropriate.