When all judges of a (typically appellate) court hear a case together, they are sitting en banc.
Referred to collectively as "The Court" or sometimes "The Bench." If the judges are working together, as they often do on appellate courts, they may be called a "panel."
Federal judges on the US Supreme Court are called justices.
A "bench of judges" typically refers to a group of judges who hear and decide cases together in a court. This can be referred to as a "panel" or "court," depending on the jurisdiction and the number of judges involved. In higher courts, such as appellate courts, a bench may consist of three or more judges. The term "full bench" is used when all judges of a court convene to hear a case.
They're just called judges, or sometimes appellate judges. The Appeals Court is made up of one Chief Judge and six associate judges.
They are called supreme court justice
The President appoints Justices (they aren't called judges, if you wish to be precise) for the Supreme Court.
En banc
The process in which judges are appointed to High Court is called The Appointments Clause in the Constitution.
The Supreme Court of the United States has nine judges, called justices.
The eight remaining judges on the United States Supreme Court are called Associate Justices.
Midnight Judges
A court made up on non-military judges is often called a tribunal. Federal judiciary courts are often called an apex.