Lead engagement score refers to a metric used to measure the level of interaction and interest a potential customer has shown towards a company or brand. It takes into account various factors such as website visits, social media interactions, email responses, and other forms of engagement to determine the likelihood of a lead converting into a paying customer. A high lead engagement score indicates a strong level of interest and engagement, while a low score may suggest a need for further nurturing and follow-up. This score is crucial for businesses to track and analyze in order to effectively target and convert leads into loyal customers.