I don't think I deserve my scholarship.
What makes you think you don't deserve your scholarship.
Because I'm a bad son. I don't communicate with my parents at all
Children who have a healthy relationship with their parents are more likely to develop positive relationships with other people around them.  Contact your parents and stay in communication with them so you can feel worthy of your education.
I hope my parents understand.
I am sure your parents are worried about you too. Give them a call and let them know how much they mean to you. Show them how great a son you can be and earn your scholarship.