Google is your friend! Try this, but keep looking on your own, you need several pieces of paper for this. I am sure you will be able to find them; if not come back with the problems you are having: https://www.traxco.ca/Canada Customs Import Regulations.pdf
You probably need to contact CBSA in order to find out exactly what you are allowed to do regarding importation and tariffs.
You may not be entitled to any tax or duty relief unless you fit into one of the known tariff groups. This will depend on the immigration status, and is based on the fact that you posted under the Refugee section of the forum.
Google is your friend! Try this, but keep looking on your own, you need several pieces of paper for this. I am sure you will be able to find them; if not come back with the problems you are having: https://www.traxco.ca/Canada Customs Import Regulations.pdf