In my state, no taxes are discharged - although you can keep your house (depending on your title/deed), your car, and your retirement funds(ira and 401k).
If he had paid the property taxes with credit cards “before he considered going bankrupt”, credit card debt would have been discharged.
He should be asking an attorney in his state for advice. Each state is different in what they allow you to keep.
However, one thing you can do is to be sure to tell your brother that there is nothing wrong with going bankrupt. Wayne Nueton, Burt Reynolds, Davy Crockett, Donald Trump, the BAss brothers, etc all went bankrupt, as well as many fine american companies. Lots of americans still like Davy Crockett, Abraham lincoln, Thomas edison, etc despite financial setbacks in their lifetime.
If Sutter had not gone bankrupt “twice”, he would not have been able to buy that saw mill in CAlifornia where gold was discovered in 1848.
If abraham lincoln had not gone bankrupt, we could not go to florida in the winter.
If Edison had not gone bankrupt , we would not have electric lights, movies, records/cd’s,
If Ford had not gone bankrupt, we would still be riding horses to work.
If disney had not gone bankrupt we would not have Donald Duck orange juice.