There is no pass or fail in IELTS. The score you need is set by the Canadian government, professional association or the institution to which you are applying.
You must also check with your province or professional registration association to find out the minimum IELTS scores they will accept
CLB Level Reading Writing Listening Speaking
10 8.0 7.5 8.5 7.5
9 7.0 7.0 8.0 7.0
8 6.5 6.5 7.5 6.5
7 6.0 6.0 6.0 6.0
6 5.0 5.5 5.5 5.5
5 4.0 5.0 5.0 5.0
4 3.5 4.0 4.5 4.0