Hii Tanweer!
AMU class 11 application forms are released in the month of January ( usually towards the end ) and the process ends in mid February. Now, the firm's will be released in January 2020. So, keep an eye on the official website. Then, you need to go for the entrance exam. In order to crack it, brush up your class 10th concepts. You can also take a coaching or do self study. The thing is, work hard, study smart and you will succeed. The eligibility criteria is having passed class 10th from a recognised board. For science stream, student must have obtained atleast an aggregate of 45% in English , science ( including life sciences ) and maths and also should have passed English, maths and science separately. Hope this helps.
Good luck!