How to add my icloud account to my iPhone contacts list

What is your default Contacts account? If none, please add an email account and enable contacts.

See the pic below

Unlike some Android devices, contacts are neither stored locally on an iPhone nor in SIM. They are synced to an email account that you had Google, iCloud, AOL, Exchange, Outlook, Yahoo or any Other

If you have a corporate email account added through a profile on your device, please check with your organization's system administrator.

swazz wrote:

need to know how to re-add my icloud contacts account to my phone.

You can't use an iPhone to do that.

Unlike some Android devices, contacts are neither stored locally on an iPhone nor in SIM. They are synced to an email account that you had Google, iCloud, AOL, Exchange, Outlook, Yahoo or any Other

Try to export the contacts from google mail on a web browser. During Export select export as vCard and then

log in to https://www.icloud.com using your Apple ID credentials Tap Contacts app > Settings > Import vCard.