Looking for advices!!

Hey there! Looking for some advice. Does anyone know details on how to get a master business license in Ontario? I do not have any idea about it if someone could help me with this, that would be great. What are the primary steps that I should follow to get the license? Is it costly? While searching on google, I noticed an ad for a master business license. Is their service reliable? I thought of approaching them. Will that be a good option? Are there any other agencies that you know personally? Please share your views. Thank you.