If a person has received significant coverage in reliable sources that are independent of the subject, they are notable enough for their own article.
Very few people are notable enough for an article on Wikipedia. Like any encyclopedia, Wikipedia includes biographies of important and famous people.
The usual rule for biographies is that there must be enough reliable, independent information to show that a lot of people are interested in the person. People who satisfy at least one of the requirements below can have their own Wikipedia articles. This is because there is likely to be a good amount of information available about them and public interest in them. This list is not complete, but it should give you an idea about the level of notability required for Wikipedia:
Note: In cases where a person is notable only for their role in one event (such as a crime), an article on the event is preferred to having a biography for the person.
My article is about a notable person