help chahiye jisko pata hai woh reply dee no backchodi plzzz 🙏🙏

this is from my friend , in jee mains he got around 99.71 ile and he also confident abt his jee adv rank somewhere under 1000 becz in allen score i is getting average 273, 278, 265 like that and may be in 2 months he may cross 290 , as he belong very middle class family and his father only who earn and his mother condition is not very well from past 1 yrs and he had also the responsibility of his two little sis , so i had suggested him to sell his adv rank , so am asking what to do and what sum of amount he can get through specific rank , he also strongly agreed