Nameservers on Godaddy side are updated to reflect suggested values from Netlify.
Only recently (today) i deleted website builder service from Godaddy, in order to reroute netlify app to custom domain, and since i am seeing 404 error, up until that moment i was able to see only website builder deployed app that comes with purchase of new domain.
$ dig guesstimateit.com NS
guesstimateit.com. 3600 IN NS dns1.p04.nsone.net.
guesstimateit.com. 3600 IN NS dns2.p04.nsone.net.
guesstimateit.com. 3600 IN NS dns3.p04.nsone.net.
guesstimateit.com. 3600 IN NS dns4.p04.nsone.net.
and associated records and have no issue accessing apex or www subdomain. If you are still having issues, try a different browser, device, and/or network, then wait.