How to calm down eyes after being plucked for very first time help really sore x?

Sore eyes. Ice is your best friend, especially after trauma around the eyes. Apply an ice pack for about 5 min every half hour. In addition, a wash cloth soaked in cool whole milk is very soothing for the eye area. Apply to the traumatized area for 15 min three times a day, then rinse off. Try to sleep with your head elevated to help prevent swelling.
Cold compresses. Lids sound to be irritated, cold compresses are good to reduce swelling and inflammation. This is usually most helpful just after an incident like plucking eye brows.