If you prefer to use the Enterprise Plan you can acquire the license by contacting cal.com/sales.
The license unlocks:
Ability to keep your repo private
Access to all APIs
Access to all enterprise features such as teams and organizations
Business hours email, chat, and phone support
SOC2, HIPAA, GDPR Compliance check
SAML SSO
Reporting & SQL analytics
Dedicated onboarding and engineering support
Extensive Whitelabeling