You have the files. Now, installing on a target machine (which has no internet) is trivial.
If you want, I can:
Once the files are downloaded, move the C:\VS2019Offline folder to your offline machine. visual studio 2019 offline installer
Navigate to the official Visual Studio 2019 download page (usually visualstudio.microsoft.com/downloads ). Download one of the following based on your license: You have the files