If you still run Windows 7 or macOS High Sierra strictly offline (never connected to the internet), a pre-activated version might technically "work." However, as soon as you connect to WiFi to email a resume, you put your data at risk.
A: No. Microsoft no longer sells licenses for Office 2013. The only legal free options are the web apps or trial versions of Microsoft 365.
A: No. Upload the file to Google Drive. You can view and edit Word docs for free without installing any software. Disclaimer: This article is for educational purposes regarding software security risks. The author does not condone software piracy. Using unauthorized "pre-activated" software violates Microsoft's End User License Agreement (EULA) and may expose you to legal liability and cyber threats.