Greetings - about cookies?
As Ryan has said in the comments, there currently isn't a native cookie consent feature within Craft CMS.

You'll need to either install a plugin (Cookie Consent plugin for Craft CMS is good) or use a service like Silk Tide Cookie Consent.

Both options require you to have access to your website via FTP. 

For the plugin, you'll upload it to the /craft/plugins/ directory and activate it via the Craft CMS control panel.

The Silk Tide method requires you to add some code between the &lt;head&gt;&lt;/head&gt; tags. 

If you need help with this, there are lots of developers on here (including myself) that can help.