we aren't there by any means, a trillion is 1K billion in the short scale, and we are still at a mere 4B
we need to do a x250, which mean a price of 62.5k, something a bit crazy, that won't be reached before 3 halving at least
an interesting thought by Winklevoss twins that Bitcoin as a payment system will surpass visa+mastercard+amex+ other major payment systems= 400 Billion$ and be in Trillions of dollars
https://youtu.be/uEIPzl4Bx5I?t=137 , so primarily it is a point of time when people start switching from these payment processors to Bitcoin, it should reach the average Joe's throughout the world from a Hotdog seller in the US to a peasant in India, thats the time probably Bitcoin will reach a trillion$ market cap.