2 pack? enamel? acrilyc? what is the original colour? is it the original paint? do u want small imperfections fixed or just painted over? windows removed or just taped up? door handles etc?

you have provided way too much information with your question.

anywhere from $1500 to $15000 based on the lack of information and without seeing the car, or you could go buy some rattle cans from supercheap should cost less then $500.