Hey guys, i need help..recently i found a kitten, at that time she was healthy and chubby..on da night i found her, she got cirit birit and vomiting..

nden she refuses to eat and only drinks plain water untill now..now she gone skinny and only eat a little..she refuses everything i gave her to eat..
anyone have any idea or has acounter da same prob before..

How much money do i need to take her to da vet since i never gone to one before..