Searching for an usually leads to two paths: legitimate purchases through official channels or promotional "giveaway" keys hosted on tech review sites. Official Purchase & Activation
If you are looking for data recovery without a paid license, consider these tools which offer free tiers: itop data recovery license key link
Many links promising license keys are delivery vehicles for malware or ransomware. You might "recover" your files only to have your entire system encrypted by a hacker five minutes later. Searching for an usually leads to two paths: