Adding extra space between image and text

With CSS.

Please provide a link to a page on your site where we can see this. Thanks.

I don’t see any images on that page.

View post on imgur.com

if you want just that one button

.maxbutton-58.maxbutton.maxbutton-all-saints-pastoral-council {
  margin-right: 2em;
}

If you want a right margin on all buttons,

.maxbutton {
   margin-right: 2em;
}

To add CSS: If you are using WordPress 4.7, use the “Custom CSS” option in the customizer. If your theme has a custom CSS option, use that to add the CSS shown above. If not, install the plugin Simple Custom CSS. Or, if you have Jetpack installed, enable its Custom CSS module.

Learn the Chrome Developer Tools to help you see and test changes to your CSS.