Your tax is based on how much you made. Most International student has to file a tax return but most likely don't have to pay any tax.
Your employer will deduct income tax and payroll taxes (Canada Pension and employment insurance ) etc. You income tax will be based on how much you made. However, if you file a tax return after the year end, you should get most of the taxes you paid back as a refund because you most likely make below a certain amount.
You can calculate the maximum taxes you have to pay before any other deductions and tax credits.
https://turbotax.intuit.ca/tax-resources/canada-income-tax-calculator.jsp?&&cid=ppc_fy21_g_tt_1701412519%7c71791830692%7cc%7ctax%20calculator%7cp&gclid=CjwKCAiAyc2BBhAaEiwA44-wW8kJ_lEto3naIsa82OnZo0QytpP9UTmLNfyaDxR0tHo39Ziosk1SwRoCyMcQAvD_BwE&gclsrc=aw.ds