On flight #Y4917 - August 18th 2021. I was being served coffee when I was spilled on me in my abdomen area. As I was trying to grab the coffee the flight attendant let go before I grasped the coffee and it spilled over the tray table and myself. This caused a very severe 3rd degree burn. The flight attendant gave me a patch with cream. Nothing more. No medical services after or anything. Very unprofessional as I was in pain the entire flight.