You can watch Barbie right now on several major services in the U.S. The most common legal options are to rent or buy digitally on platforms such as Apple TV, Amazon Prime Video, Google Play, Vudu, and YouTube, or to stream with a subscription on Max (where it is often available as part of the standard library).
Availability can vary by country and change over time, so it is best to confirm within your local app or store. The sections below explain how to check your region, compare prices, choose rental versus purchase, and avoid unofficial uploads that may violate copyright or terms of service.