Hey @kuansari01,
Welcome to the Community!
The over usage rates vary depending on which plan you are on. You can get the exact amount by referring to the ''Summary of your Fido services'' page of your bill.
If you are on Online Billing, you'll be able to see this information by logging into My Account, clicking on ``Billing & Payments`` and downloading the PDF File of your invoice.
I hope this information was helpful. 
