Rabies virus infection, regardless of the variant or animal reservoir, is fatal in over 99% of cases, making it one of the world’s most deadly diseases. There is no treatment once signs or symptoms of the disease begin, and the disease is fatal in humans and animals within 1–2 weeks of symptom onset. Prompt administration of postexposure prophylaxis (PEP), consisting of rabies vaccine and immune globulin, immediately after exposure effectively prevents disease

Once there’s symptoms. There was some research finding antibodies to rabies in people who never had the vaccine, but then again it could have been some related virus.

Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7017994/

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Basically, though there is one known person who survived without getting treatment before their symptoms--Jeanna Giese.

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