It sounds like you may have come across a site offering a "free download" of (the 2022 version). Before you click that link, The Reality Check

This is free for developers . It includes the full Wolfram Language; you just use it via a command line or IDE instead of the classic notebook interface.

Skip the "Free Download" advertisements. They are a major security risk for your Mac. Stick to the Free Wolfram Engine or the Cloud version for a safe, legal experience. To help you get started with the right version, tell me:

(e.g., using a terminal vs. needing a visual interface) Your budget (e.g., strictly $0 vs. student pricing)

The full version of Mathematica comes pre-installed and free on the Raspberry Pi OS.