It's part of a sentence where a mom is giving her okay for her kid to travel somewhere with the goal of getting some rest and maybe improving their health - think of a summer camp or a wellness retreat kind of vibe. So, it's like a formal thumbs-up from a parent allowing their child to go on a trip aimed at chilling out and maybe getting a bit healthier in the process.

The phrase you're looking at, "у метою оздоровлення та відпочинку," basically means "for the purpose of health and rest" in Italian.