What movie is about a person who runs into dangerous woods and someone else who s very skilled gets hired to find her?

The movie you're referring to is likely "Into the Wild," which tells the story of Christopher McCandless. However, if you're thinking specifically of a situation where someone runs into dangerous woods and another person is hired to find them, it might be "The River Wild." In this film, a family encounters a dangerous situation while rafting, and a skilled guide must navigate the treacherous terrain to ensure their safety.