I don't know if you're talking of a specific title, but you can buy digitally on ComiXology, Google Play, Apple Books, and NOOK; or buy physical copies on the Boom! Studios website, Things from Another World, Barnes & Noble, Amazon, and your local bookstore/comic shop.
For free, you can try Hoopla or your local library. I can't share on this platform where you can read comics online, but you could google these exact words.