The science uses so called metodological naturalism and works with measurable phenomenones. The science is therefore helpless in an effort to prove or disprove the existence of nonmeasurable phenomenones, such as the human soul or God.
The possible existence of such nonmeasurable phenomenones thus has to rest unresolved. The situation is furthermore complicated by the fact, that the scientists, philosophers and theologians have different definitions of the notions like "God" and "to exist".
The religion itself, nevertheless, is a measurable phenomenon, and in the frame of darwinian paradigm, its existence could be explained either as a by-product of the evolution, or as an adaptation. The science tries not to verify given hypothesis, but on the contrary to falzify them.
If scientists are not able to create any experiment, which would falzify given hypothesis, it is no more science, but pseudoscience. Given the fact, that we are able to explain both the existence of the religion and its potential nonexistence, we find ourselves in the risk of pseudoscience.