How can I add a link to my Google Reviews and Facebook page Reviews for our satisfied customers to click on at the bottom of the survey I am designing

It's possible to add hyperlinks to your form, kindly refer to this guide for the details: https://www.jotform.com/help/431-How-to-Add-a-Downloadable-File-to-Your-Form

You may also add an image and add the hyperlink there, you will find the image element on the add form element section while working on the form builder. 

If you have questions, let us know.