It's completely normal for girls (and everyone) to have hair around their mouth.
This hair is called peach fuzz and is present on most people. It's usually light in color and very fine, making it less noticeable than other types of hair.
While some people may notice their peach fuzz more than others, it's a natural part of human development and nothing to be concerned about.
It's important to remember that everyone is different, and what might be considered "normal" for one person may not be for another.
If you have any concerns about your hair growth, it's always best to talk to a doctor or dermatologist.