Can you get rabies from a possum bite?

No.

True possums are found in Australia (and have also been introduced to New Zealand) and neither of these countries has rabies.

The opossums of North America, which are sometimes referred to as possums, even though they are a quite different animal, are generally unable to contract or carry the rabies virus. However, exceptions do occur, and there is at least one documented case of a rabid opossum (not possum) biting a person.