It would be for my parents but not for myself. I would pay the last bit of theirs off and take a chunk of mine and try to get my brother out of rental.

Nope. I’d be trying to work out why I have USA funny Money being sent to me rather than a normal local currency.

In all seriousness (and ignoring the USdefaultism) I would pay off mortgage for myself and any family members and any remainder would go to a local chapter of https://menssheds.org.uk/ or similar organisation.

I’d try to work out what the scam is as I work in sterling or euros usually.