Hello Krishna, Congrats for getting good rank in APICET, But this rank is not eligible for sear in university, the eligible rank to get seat in university is below 500, In here caste reservation also can't help. But you can get seat in top colleges. below i provide link for MCA colleges in Andhra pradesh. All the best.

https://bschool.careers360.com/colleges/list-of-mca-colleges-in-andhra-pradesh

You rank is not very bad I think at this rank you may get some good and decent Institute with definitely help in your for future study and you may also take advantage of BC category. So no need to worry so make a list of Institute which suitable for you and capable and fill all your requirement.o worry you SO no need to worry you definitely get best Institute for MCA.

Good Luck.