Even if you find a "top portable" that works perfectly, using it for commercial work exposes you to legal liability. Autodesk actively scans for pirated copies via telemetry (even in old versions) and has successfully sued companies for using unlicensed max.
Only use a portable version if you possess a genuine perpetual license key purchased before 2010. Use it only on machines you own. autodesk 3ds max 2009 portable top