You trained in the profession of interpreter at a college and have completed a final state examination. This is then equivalent to training in Germany. Your reference occupation is interpreter (state-certified).

You have acquired the knowledge and skills for working as an interpreter at a university and have also completed a final examination. This is then equivalent to a degree in Germany. Your reference occupation is interpreter (University).

You would like to work in Germany in court. In this case you need a specific qualification. You need recognition of your professional qualification as an interpreter. And you must be sworn in as an interpreter by a court. You apply for this to the courts. Your reference occupation is court interpreter (officially sworn-in).