That’s all one shot and, thankfully, no one got hurt. John Krasinski knew he was asking a lot of his actors, from Emily Blunt to young Noah Jupe as Marcus Abbott. Blunt recently spoke out about this “terrifying” stunt, saying she was proud of Krasinski for choreographing the shot, but she also told the stunt driver on top of the car that her life was in his hands.
Article source: https://www.cinemablend.com/news/2491587/john-krasinski-says-a-quiet-place-2-very-real-bus-stunt-put-his-marriage-emily-blunt-on-the-line