can anyone assist me with flow rate of cbr600rr standard pump plz!

There's more than one pump on that engine.

59900 cc/s @ 6000rpm

Hector, you are right. I am looking for flow rate of supply oil pump of CBR600RR. I am trying to select a scavenging for a dry sump system.

You might want to ask people who make the scavenge pumps. Some are designed for motorbike engines, so they should have a good idea of what the oil pressure pump flows, and what you will need in terms of scavenge.

Dailey Engineering in the US would be a good place to start, as they make scavenge pumps for motorbikes, and have dealt with FSAE teams before.