If every Bible and every science book were destroyed, the science books would come back but the Bible wouldn’t. But is it because one is factual and the other isn’t? That’s the question.
Science is knowledge, systemized knowledge, or a branch of knowledge based on observation and experimentation. For this reason, the origin of the universe is still in the realm of theory; it is neither observable or repeatable
So if all knowledge were to be erased, the only information that could come back would be those things that we can still observe and experiment with: mathematics, biology, physics, chemistry and sociology. We’d lose almost all of that last one. History is not repeatable and is only observable by those who record it and then it can never be lived/experienced again. So we would lose EVERYTHING we know about the past
But, losing the written historical record doesn’t move sociology or history into the realm of fiction.