Well... I don't think it's acid, especially concentrated one. To me, it seems like Pepsi, Coca Cola, or any similar soft drink (but it needs to be confirmed). These carbonated Soft drinks also contain phosphoric acid, and it can be dangerous for paint.
@ayaz.mehmood56 , bro can you confirm that it was for sure acid? If Yes, then how can you confirm it?
What an acid (may be battery acid) do to the car paint? May be, I will share through some pics and based on my own, personal experience.