Mike Gill responded
Here’s two that sort of cover this but there are many more. Some grey literature publications from WCMC on the BIP website that might be useful.
Han, X., Gill, M., Hamilton, H., Vergara, S., and Young, B. (2020). Progress on national biodiversity indicator reporting and prospects for filling indicator gaps in Southeast Asia. Environmental and Sustainability Indicators
Bhatt. R., Gill, M., Hamilton, H., Han, X., Linden, H., and Young, B. (2020). Uneven Use of Biodiversity Indicators in Fifth National Reports to the Convention on Biological Diversity. Environmental Conservation