Inspection question re Energy Certificate

[Alyssa Yumi Nelson]

Hello! I recently failed my certificate of occupancy building inspection in part due to "1. 2017 R401.3 Missing Energy Certificate". When I asked the inspector how to correct this issue, she told me to "google it". I found the DC energy certificate template she was referring to but I do not know how to complete all the information they request such as air leakage test results, fenestration rating, insultation rating, etc. The flippers who sold me the house are non responsive. Anyone have a clue how to complete these things?