If by “help” you mean buy cool toys and beat the shit out of people while wearing skin-tight rubber and lycra (not that I’m kink-shaming, mind)…
As Bruce Wayne he dumps a ridiculous amount of money into Gotham. Food banks, orphanages, hospitals, schools, employment programs, all funded by Bruce Wayne or Wayne Enterprises.
Any other city would be a utopia with the philanthropic support he gives; it’s not his fault Gotham is literally cursed