Go to Help > About Automation Studio . Under the "Licenses" tab, you should see your product ID and expiration date (if any).
At the heart of the B&R ecosystem lies Automation Studio. It is the integrated development environment (IDE) where PLC code, motion control logic, and HMI designs converge. However, unlike consumer software where a license key unlocks the tool itself, B&R’s model primarily revolves around the runtime environment—the target . b&r automation studio license key
Most licenses are tied to a physical USB hardware device (TG44 or similar). Go to Help > About Automation Studio