Hi,
In Dynamics SCM has multiple modules:
1. Product information management
2. Procurement and sourcing
3. Sales and Marketing
4. Inventory management
5. Warehouse Management
6. Transportation management
and few more .
Now along with these you should also have access to System Admin and Organization admin
Now to start with you first ned to create Legal entity in organization admin and then start configuration in each module.
Here is the guide for product information but you can find similar document for other modules
docs.microsoft.com/.../product-information