How to connect MySQL workbench with MAMP PRO?

Connection to DB with MAMP. You must use local connection

In my case the problem was the ports. As well explained here, the default mysql port in MAMP is 8889, and not 3306, although in MAMP localhost website says that it`s running in 3306.

MAMP server typically uses 8889 port instead of 3306. You can check it in MAMP/SQL section.