The score in IELTS required for canada PR is 6.0 in all the bands. However, with a higher score in this exam, you can immigrate to canada quickly. You must have, CLB 8 which is 6.5 in all the bands excluding listening which needs a score of 7.5. A candidate can also get canadian PR with a lower score in IELTS provided he has NCLC 7 score in French. Then a candidate can get the canadian PR with a CLB4-CLB5 provided he scores well on the other eligibility criteria.