Hi Puneet,
It really depends, but CIC processes most applications within 6 months (see here for more info: http://www.cic.gc.ca/english/immigrate/skilled/next_steps.asp).
However, this is for your complete application (not just profile), and being invited to apply after submitting your profile can take a few weeks to months depending on your initial score. The minimum is probably 4-5ish months if things go very smoothly, but there is no maximum if you don’t have a high score or don’t submit the applications properly.
Best of luck!