Screen lock needs to be open

Good evening ? sir,

I lost my husband due to covid, he changed his samsung M51 password at work place, I recived that phone one day before It is showing only 2 attampts we have all imp pictures and data in it , is there any one can help with screen lock to unlock without loosing data /information in it I have two small kids we have all imp pictures and his Gmail password everything linked in it , sir please is there any one can help with it please