Hi,
what do you mean with flight profiles?
Do you mean the T/O and approach profiles? They should be in the FCOM or at least in the PRM (pilot reference manual) which you should get from the TRTO.
If you mean the climb/descent profiles, we fly the CRJ900 according following schedule:
Climb: 250(bel. FL100)/290/.77
Cruise: 300/.78 whichever is less
Descent: .78/300-320/250(bel. FL100)
For which company will you fly?