Take an Example of bank account opening.
E2E Testing : In E2E testing user will check the flow like user will take the applciation from bank and fill it and get approved by the manager and also he will get the back account number. This is the E2E testing.
Scenario Testing : While testing scenario we will verify that when applciation was given the stock of the application got reduced or not. And when account number was generated was it an unique account number. And what ever the deposit given by the applciant is updated or not in his account. All these factors will be considered while doing scenario testing
Pradeep R