I found Tales of the End by David Barr really helpful; used it to lead a Bible study on Revelation at my church: https://www.amazon.com/Tales-End-Narrative-Commentary-Revelation-ebook/dp/B00641SEAC/ref=sr_1_1?dchild=1&keywords=tales+of+the+end&qid=1608732298&sr=8-1
I also wrote a post on reading Revelation responsibly today: https://pcpj.org/2020/04/12/reading-the-revelation-in-the-age-of-covid-19/