To add your domain name to your free hosting account, you either need to:
Update your domain’s nameservers to use our nameservers.
Add a CNAME record to your current nameservers to verify your ownership of the domain name.
We recommend changing the nameservers, as it’s the least number of steps needed to add your domain name and configure it correctly to use our hosting.
Your domain name is currently registered with Go Daddy and is using Go Daddy’s nameservers, so whichever method you choose, you’ll need to do it at Go Daddy.
This guide from Go Daddy tells you how to change your nameservers through their panel:
If you need more help with that, please try asking Go Daddy for help as well, they know their panel better than we do.