Once the reports are done, is there any $Path where I can check for all Reports IDs completed?
I’m not sure what you mean by $Path. If you don’t want to use the GSA web-interface, you can use the python-gvm API tools. The get_reports() function will give a list of report IDs. You should also check the filter keywords documentation, since it seems you want to further filter by report status.
On Kali, Is there any file on any directory where I can see the some information/metadata about the reports?