Can thread lifts help with nose bumps?

Without photos it's impossible to make any assessment. However, if you're talking about a dorsal hump, then no, thread lifts are not indicated. Sometimes filler can be used to camouflage the bump. I would encourage you see see a rhinoplasty specialist who does closed (scarless) rhinoplasty. This is a way to remove the hump without external incisions and with quick recovery.

A hyaluronic-based acid filler or PDO thread can be attempted with an expert physician. Fillers are used to contour facial features and add volume where needed. PDO threads work by repositioning threads to contour also. See a doctor to get an assessment.

No, thread lifts Will not help with the dorsal hump on your nose which is composed of both bone and cartilage. Consider a closed rhinoplasty to shave down the dorsal hump.