I have a requirement of displaying only delve results (only my organization results) while searching on office 365. I could not find anything relevant to this SharePoint communities. What could be the filter I need to set on Query Builder to achieve this? I tired path:https://nam.delve.office.com but didn't help. Appreciate your help.
Your question doesn't really make sense when taken into context. Delve isn't a result source. It displays results based on the Microsoft Graph which pulls information from multiple locations.
You would need to query the Graph rather than creating a SharePoint search solution.