You can get there several different ways. If you are on the GoDaddy home page, hover over "Domains" in the top menu, then choose "Domain Auctions" under the "Auctions" column.
Or you can click on your profile name at the upper right and choose the Quick Link for "Manage Domains". Once there use the upper menu of "Buy & Sell" to choose "GoDaddy Auctions Listings". That will get you to the same place.
TLH - GoDaddy | Community Moderator Supporting you at x.co/247support