Retirement tax questions

I'm sorry, yes, it was a 1099-C.  The date of identifiable event says 12/31/2023.  This is confusing because the loan defaulted in 2009 and I have not lived there since.  I do not believe you can sign a contract in Texas at 17, however I was married at the time, so not sure if that makes a difference.  Of course, at 17, I did not know these things.  The home was a primary residence up until we defaulted in 2009.  It was not part of a bankruptcy.  We had gotten behind and the company was not willing to work with us, so we surrendered the house.  Nearly 15 years later, this is the first thing I have received about it.  I do not know whether it is legit, where and how it needs to be claimed on taxes, and if it does have to be claimed as income, how does that work if I am no longer married to the other signer on the note.