A Gold Profile is a profile with additional information filled in.
When you create a profile on Waitly, your profile will automatically be a Bronze Profile. By filling in more information, you can achieve a Silver Profile or a Gold Profile. A Gold Profile will increase your chances of receiving offers, as administrators will have more details about you during the selection process. This ensures a better match.
If you want to know how to add more information and thus achieve a Gold Profile, you can read this article: How do I get a Gold Profile?