The tax rates in 2022 were 15%, 20.5%, 26%, 29%, and 33%.
For example, if you worked part-time over about six months and you earned $10,000 your income would be in the first bracket, and your tax rate would be 15%.
If you made over the first tax bracket of $50,197, any amount of this will be taxed at 20.5%. The good thing in Canada is that your income up to $50,197 will still just be taxed 15%, and you will only be taxed higher on money over this number.
Child benefit is affected by how many children you have and how old they are, and the particular province or territory of residence. Child benefit is not available if your income exceeds C$200,000 per year.