I’m curious to speculate on the most boring possible outcome. Let’s say there is wreckage, from an unmanned craft like a sensing probe dispatched at some unknown time in the past by an unknown creator, including potentially millions of years ago by a species that’s long extinct. There would be a clamor for private business and the general public to get research access, but maybe there’s very little we can actually learn yet. It could be possible these craft reached this solar system very slowly, with no sci-fi FTL propulsion. One way or another there would be a finite amount to glean, and other than any technological benefits how much would it really change life? Organized religion has proven resilient - I honestly doubt the revelation that there was at some point intelligent life distantly far away in the universe would upset their apple cart too much.