For the past few years the closing rank of giet school of pharmacy Rajahmundry is about 20k to 25k in ap eamcet. So it is quite difficult for you to get admission there as your rank is not competitive.cutoff changes every year but there is a slight difference so it cannot be possible to jump from 20k to 40k.

However you can apply to other colleges with these scores to know the college that accepts ap eamcet scores for pharmacy colleges

https://pharmacy.careers360.com/colleges/list-of-pharmacy-colleges-in-india-accepting-ap-eamcet