Here "find favor" is an idiom that means be approved of or that he is pleased with her. Here "eyes" are a metonym for sight, and sight is a metaphor representing his evaluation. AT: "Please accept me" (See: [[rc://en/ta/man/translate/figs-idiom]] and [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-metaphor]])
Possible meanings are 1) Ruth was not one of Boaz's female servants or 2) Ruth did not think her marriage to Naomi's son granted her any privilege in Bethlehem.