I seem to have added them back in 2012. According to https://commons.wikimedia.org/w/index.php?title=Commons:Monuments_database/Statistics&oldid=204208075 it worked some time ago, missing on https://commons.wikimedia.org/wiki/Commons:Monuments_database/Statistics (current version). Configuration is at https://github.com/wikimedia/labs-tools-heritage/blob/master/erfgoedbot/monuments_config/gb-sct_en.json . Some things to check:

• https://en.wikipedia.org/w/index.php?title=Template:HB_Scotland_row&redirect=no was moved/merged, but it's still referenced. I don't think the bot can handle redirects so probably a simple search/replace run on the English Wikipedia would fix this part.
• https://en.wikipedia.org/wiki/List_of_Category_A_listed_buildings_in_Aberdeen is using a slightly different header name "HS listed building header" vs "HS Scotland header" (https://en.wikipedia.org/w/index.php?title=Template:HS_Scotland_header&action=edit&redlink=1 does not exist, I think we just changed HB for HS). Does not finding a header template prevent the bot from indexing a page? Is that a bug or a feature. Updating the configuration would probably fix this part.