mam what does your mother do mei does Ku aayega what do your mother do hoga na

What does your mother do? It's a sentence of simple present tense where "does" is helping verb and "do" is main verb. We can't use "do" as a helping verb here because here subject is "your mother" and it's singular and in simple present tense where there is a singular subject in the given sentence. Then we use singular helping verb "does" for that sentence.

Because 'Your mother' It is talking about a third singular person. So, We should use does here not do. Hence the correct answer will be, "What does your mother do?"