Please I an a student on scholarship in the uk for a year I have less than one year to complete my course. I am in the us as an immigrant with the dv lottery I want to know when my green card will come to my mail box. So I can go to school since I can't leave the us with my green card

Once you arrive in US, you must call USCIS reporting that you're in US and give your postal address. The card would be in the mail in 6-8 weeks.