Is there a reason why

UserLocationPerformanceReport

is not included in the Bing Ads connector? I can get that through Fivetran (it's pretty large), but also Meltano doesn't support it.

Do you have any documentation to Bing docs related to this report?

There is this one that describes how to make a request to the API for this specific report: https://learn.microsoft.com/en-us/advertising/reporting-service/userlocationperformancereportrequest?view=bingads-13