Yes, you can indeed retake your test if you don't pass, however, you must wait 48 hours before taking the test again.
HubSpot recommends using those 48 hours to study up. Use the study guides listed below as resources to help you prepare to rock it on the test:
- Inbound Certification Study Guide
- HubSpot Certification Study Guide
- HubSpot Design Certification Study Guide
You can take the test up to three times before getting locked out for 30 days.