Deductions & credits

Got it, so I do need to report this to the IRS, correct? 

If that is the case,, if we file separately for 2022, how do I report this? If we file jointly I see where to add the information. The biggest question is where do I find the numbers to total up the depreciation on previous tax returns? Where do I find the numbers to total up the AMT Depreciation on previous tax returns? How do I know we used these credits, multiple times our expenses on the home were more than his earnings.