I notice you're asking about installing "ArcGIS 108" — but there is no official version (the correct versioning is ArcGIS 10.8.x, not "108").
Before proceeding with the installation, verify that your computer meets the standard hardware and software demands: : Windows 10 or Windows 11 (64-bit).
Install Arcgis 108 Exclusive Review
I notice you're asking about installing "ArcGIS 108" — but there is no official version (the correct versioning is ArcGIS 10.8.x, not "108").
Before proceeding with the installation, verify that your computer meets the standard hardware and software demands: : Windows 10 or Windows 11 (64-bit).