I made a couple of assumptions:
(1) I only calculated the probability of the Vampire and ONE Goth finding each other: simplifies the math and we did kill one Goth already.
(2) The Vampire and Goth are not lynched by the Villagers day-to-day, and neither are of them killed night-to-night by the WWs: again, simplifies the math and is necessary to assume that both are still in play, otherwise we would know already (I think).
(3) The villager lynched and the villager killed by the WWs are the players that were scanned by the Vampire and Goth: in reality, this is most likely not true, but there's no way to account for this without the calculations getting out of hand, then you'd have to subtract the probability that the dead villagers were actually scanned from the overall probabilities of scanning the Goth or Vampire correctly.
(4) The Vampire and Goth do not scan themselves: obviously.

(5) I subtract the villager killed by the WWs from the next night's probability because the Vampire/Goth scan occurs before the night's WW attack, so all villagers that are still alive after the lynching are available to be scanned.
The game is probably over by Day 8 and if not, probably over the next day as either the WWs or the Vampires will have most, if not the actual, majority by then.
vampProb: the probability that the Vampire successfully scans the Goth
gothProb: the probability that the Goth successfully scans the Vampire
findProb: the additive probability that either the Vampire scans the Goth successfully -or- the Goth scans the Vampire successfully... this probability is the sum of vampProb and gothProb because only one is required successfully scan the other in order to activate the Vampires.
missProb: (1 - findProb), the probability that the Vampire and the Goth miss each other.
overallMissProb: This is what you wanted appleguy123... this is the overall probability that the Vampire and Goth have not found each other by Night N. This is calculated by multiplying the previous night probabilities by the current night probability of not having scanned successfully. The probabilities are multiplied because in order to not have been activated by Night 5, they had to have missed Night 1 and Night 2 and Night 3 and Night 4. The probabilities are shifted down by one row because the probability reflects the odds of not having been activated by Night N.
My villagersLeft column is off by two because of the missed WWs attack a couple nights ago and because KMM was resurrected. But I think you can deduce the new odds from the spreadsheet... the Vampires/Goth basically got an extra night to scan (if I'm thinking about it correctly). So I think that means you just need to look at the overallMissProb for the next night to get the odds for tonight, etc. I think.
Hope that all makes sense. If I made a mistake somewhere there, just let me know and I'll try to fix it.
EDIT:
Given the assumptions that I made and the fact that because the WWs missed an attack and KMM was resurrected, the true probabilities are likely higher.