hi,

see loreto college , kolkata is affiliated under calcutta university. however this year due to corona pandemic , west bengal state board exam of 10+2 course is yet to held, generally colleges under calcutta university release the application form once the WB state board exam results for 12th course in released. however you may check the official website from time to time and watch on news channel to  get latest updates. chances that in late june or first of  july most probably notifications would release.