which one is correct " Is God exist "? or " Do God exist "?

does God exist? use of DO / DOES with main verbs use of do : 1st person ( i ,we) and 2nd person (you) eg: do you speak english ? ( right bcaz main verb is used ."speak") are you speak engilsh ? ( wrong) Use of DOES : 3rd person ( he, she , name etc) eg: does ram speak english? Use of IS/ARE / AM with auxiliary verb , noun , adj. etc IS : he she it etc ARE: you we etc AM : I eg: you are student. ( student is noun) i am reading this ( here am is auxiliary verb) i am good ( here good is adj.)