If you are looking for a digital key for the PC version, these are current offers from reputable retailers:
The full text for the End User License Agreement (EULA) is provided by the developer, Rebellion Developments . This legal contract governs your use of the game on PC and other platforms. Sniper Elite 5 End User License Agreement (Summary) Sniper Elite 5 | Licence ke staЕѕenГ PC hry
Circumventing or removing (DRM) or copyright notices. If you are looking for a digital key