Modern versions of Adobe Premiere Pro do not use static serial numbers for activation. Instead, the software is authorized through a "Named User License" tied to your email account. Adobe Help Center Individuals : Available as a single-app plan starting at US$22.99/mo or as part of the Creative Cloud "All Apps" suite for US$69.99/mo : Business-tier licenses are roughly US$37.99/mo
One common method people use to find a cheaper licence is through educational keys. Adobe offers a significant discount—usually over 60% off—for students and teachers. adobe premiere pro licence key
Two decades ago, Adobe used a "perpetual license" model. You would pay a large one-time fee (e.g., $700 or more) for a physical disc or a download code. This code was your "licence key." You owned that version of the software forever. Modern versions of Adobe Premiere Pro do not