The official way to access Wolfram Mathematica 12 for free is through legitimate academic licenses, specific hardware bundles, or limited-time trials
If you already have a license (e.g., through school or a past purchase) and need your key: Find Your Activation Key - Wolfram Language Documentation wolfram mathematica 12 activation key free
Wolfram maintains a public notebook repository where you can explore interactive demonstrations and computations. These are free to use and can provide a taste of Mathematica's capabilities. The official way to access Wolfram Mathematica 12
