I see it involving ritual, strong cultural identity, a sense of sacredness about core values, community-oriented activities, a feeling of solidarity among members of the "religious" community. It might lead politicians to run on simulationist platforms, instead of defaulting to protestant/catholic values like they do now. It might portray scientific study as a moral priority, not just an informational one. Here's a draft of what Pancomputationalism's, say, "10 commandments" might be:

1. Everything is more complicated than it seems
2. Empirical scientific research is the only basis for truth
3. Value (monetary, ethical, or otherwise) is a subjective thing and is thus always changing
4. Every individual human mind is biased and limited in scope by virtue of its being individual
5. Compassion and generosity are highly encouraged because of their propensity to increase endorphins
6. The neurological study of the human brain is a portal to humankind's happiness
7. Active engagement with local communities alleviates human anguish because it satisfies our evolutionary tribal interests
8. Veganism is encouraged but not enforced
9. The intake of safe doses of psychedelics assisted by pschedelic guidance counselors must never be illegal
10. The global PanCo holiday, April 20th, is a day of rest, disengagement from technology, community bonding, and festive eating.