There are three main ways to get sandboxes for Salesforce B2C Commerce:
- For customers and prospects: Please reach out to your Commerce Cloud Account Executive
- For System Integrator (SI) partners: reach out to your Partner Manager, or see details here about becoming a Salesforce Partner where you can get your own sandboxes
- For ISVs and ISV prospects: You can complete this form if you are looking to be an ISV Partner where you can get a trial sandbox
For any other reason for a sandbox, reach out to @Andrew Lawrence in the SFCC Unofficial Slack. There are no promises for other use cases -- it will depend on what you are looking to use it for, who you are working for, length of time you need it, etc.