I need to name of my baby girl starting with "R" and My Name is Md. Rashedul Amin.

All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.

Your question is somewhat ambiguous. However, it is allowed to name your female child with names starting with letter R, such as Ruqaiyyah, Raashidah, Raadiyah, Rawdah, etc. We think this point is known to everyone, which is why we are surprised at your question on the permissibility of this!

Allah knows best.