Hi...my cousin’s daughter is 7 years old and my cousin wants to teach her further in Canada...So my question is Can a child of 7 years go to study in Canada?
Your cousin may attempt to get a visitor’s visa but if your plans are for them to live here on a visitor’s visa, that will not work. Your cousin will need to give you guardianship of his daughter. IF he is approved a TRV and IF his daughter is approved a study permit, he can visit his daughter from time to time but he cannot live here based on his daughter being a student. If he gets rejected for a TRV then someone who has the right to enter Canada must pick her up and accompany her.
Canada is not obligated to give him a visa. You said you are a PR? Again, your cousin can appoint you guardian. You can pick her up and take her here to live with you. If you do not want to then I guess the answer is, unless your cousin applies to become a PR as well and has the right to live here, his daughter can’t either.