Pulling profile values into email for third-party dynamic content

Hi,

I am moving my email from another ESP that used ampscript to pull in profile values. I don't know much about non-HTML development and I need to pull the zipCode and CusGuid into my email, which will then populate the URLs for third-party content. Can someone provide instructions on how to pull that into my emails? Below is what my ampscript looked like in the old ESP.

<!--POST
var ym_user_id = user.attr("id");

var __postalCode__ = user.attr("postalCode");
POST-->

Thanks so much in advance.
Terri C.