MYSQL server port is 3306 for listening. If you're struggling of doing that, I would recommend to read the following guide, where the basic commands and techniques are used and applied. Also, it is necessary to read if you're a beginner at MYSQL. It is sort of a basic user guide, which you should know 100%. All steps and functions are perfectly described, easy to read and have screenshots with comments. MYSQL is not that difficult to deal with :)
Default port of MySQL is 3306. Most of the hosting providers change the default ports for securities reasons. Check out by phpinfo function on your web hosting account.