That’s not a nafka meena. I have plenty of friends who hardly knew how to boil water before marriage, and learned how to cook just fine (without any panicking). It’s really not rocket science.
Besides, Queen Bee makes a good point – it’s much so much better to learn cooking, sewing, etc. from your mother or grandmother. Making classes to teach you these skills in effect would put them out of business. My grandmother taught me how to knit and crochet, and I wouldn’t give up her instruction for any amount of egg rolls and fancy napkins. Bonding with her made the whole thing worth it, regardless of what trifling thing she taught me.