赔罪 means 'to apologize', typically for a serious offense or wrongdoing. It's a separable verb (离合词) — you can insert 个, 了, 过, or measure words like 次 between 赔 and 罪, e.g., 赔个罪 ('make an apology') or 赔了三次罪 ('apologized three times'). The person you apologize to is introduced by 向 or 跟, placed before 赔罪.