Does a breast needle biopsy hurt a lot?

Usually no. Generally a local anesthetic medication is used that may cause very brief discomfort, like a shot, then the area becomes numb. Some feel a mild pressure sensation during the procedure itself, and there s usually little soreness after the local anesthetic wears off later.
Needle biopsy. These are performed under local anesthesia, there may be some mild discomfort, but the procedure is generally very well tolerated.