If my husband applies for skilled immigration to Canada, can my parents and I go to Canada with him?

You can apply with your husband. If your education is high enough, your husband's application can get extra points, which is easier to succeed than his application alone. But your parents can't apply together in the future. If you have a fixed income in Canada, meeting certain conditions can guarantee your parents' reunion. At present, the success rate of skilled migration ranges from 2 years to 5 years.