Deductions & credits

Something then is very wrong. Line 16 is blank for me.  Did I answer the questions wrong in completing my credit?  I spent $1500 on insulation that I installed in my attic, to bring it up to code and efficiency. It was in my primary residence.  The construction questions are confusing.  The house was built in the 1970s. Please tell me how I am supposed to answer these questions, so I can get the energy improvement credit, and where does that show as a carry over on form 5695? I had NO tax liability for 2022 on my 1040.  I am retired and have a small income. My wife and I are filing jointly, and BOTH of us live in our primary residence.