Hi jorgepzul,

Sorry for the late reply.

1) To set a link there you can just add the html tag for a link. 
For example replace this text as the footer copyright section text in salient \ footer  area:

All Rights Reserved.<a href="https://google.com">linked text here</a>

2) To make that text bigger use this CSS:

#footer-outer #copyright p{
    font-size:2em;
}

You can adjust the size value to what you need.
Add the CSS to salient \ general settings - css script related - custom css code.

Hope this helps.