There are three Venom movies total: Venom, Venom: Let There Be Carnage, and Venom: The Last Dance. Technically speaking, Venom got his first on-screen movie appearance in Spider-Man 3 in 2007. However ...
Currently, only Spider-Man: No Way Home and The Incredible Hulk are not available to stream on Disney Plus in the US. Even so, Disney Plus is by far the easiest way to watch the MCU in order.