Do you get a choice in religion in dictatorship?

Answer 1

It entirely depends on the structure of the Dictatorship.

There are numerous dictatorships with relative freedom of religion. Ancient and Medieval China, for example, were absolute dictatorships, but permitted numerous different faiths (Shenism, Daoism, Mahayana Buddhism, Theravada Buddhism, Islam, Christianity, and Judaism) to freely worship within their borders. There are other dictatorships which either (1) have a single acceptable religion (such as Catholic Spain of the 1500s), (2) allow some religions but ban others (such as the Rashidun Caliphate of the 600s which accepted Islam, Judaism, and Christianity, but banned Hubalism, Rahmanism, and other henotheisms), (3) actively repress all religions (such as the Soviet Union).

Answer 2

You don't get much choice because you are ruled by the dictator.