Form to Contacts add-on for Google Forms integrates your Google Contacts with Forms, allowing you to compose contacts while your form is submitted.

Free Features:
 * Create 25 contacts/month

Premium Features:
 * Create 1000(Gmail); 2000(G Suite) contacts per day (Limit set by Google Quota)
 * Create contacts to specific group
 * Create custom fields

Video help: https://youtu.be/EgfFzlTNAwc
For more details about quotas visit: https://developers.google.com/apps-script/guides/services/quotas