Either the Trial Court or Court of Appeals. Jurisdiction is a separate issue. 1331 usually applies. Under federal law, the enabling statute usually allows for judicial review and sets forth the procedures for how judicial review to be obtained. When statutory review available, it is the only path to judicial review.
Jurisdiction is established.
The statute will establish specific requirements for review, e.g., the court that will conduct the review as well as the time and the form in which review sought. The Federal Trade Commission statute in notes is exemplary of judicial review provision in enabling statutes. Litigant must file a civil action against an agency or the responsible official. Ordinary rules of jurisdiction and venue apply. Under state law, the model is often different.