To download and install ArcGIS Desktop (ArcMap) 10.8.2, you should use the official My Esri portal . This version is primarily focused on maintenance and bug fixes, and it requires an active license and administrative permissions for your account to access the download files . Official Download & Installation Steps
After downloading the software, follow the installation instructions to install ArcGIS Desktop 10.8.2. You will need to authorize the software using a valid license. arcgis desktop 10.8.2 download
Run the Setup: Launch setup.exe from your extracted download folder. To download and install ArcGIS Desktop (ArcMap) 10