I am 19, and my mother got a green card in Holland. What are the immigration procedures and time?

It's simple. Your mother has got a green card. Just ask your mother to show your birth certificate to the Immigration Bureau. It should take more than 1 month. You should fill out a form.

Of course, in view of your situation, it may not be so simple if the court awards you to your father. You must first get your father's consent, have a written agreement and notarize it, and then go to the public security, court and embassy. ...