My iMessage number has a +1 under send and receive listed infront of it. Under settings/phone there is no plus one under "my number" does this matter? I have verizon.

Hey brianfromcharlton,

Thanks for the question. If I understand correctly, you have a phone number linked to iMessage and the phone number has a +1 in front of it. I would recommend that you read this article, it may be able to help the issue.

iOS and OS X: Link your phone number and Apple ID for use with FaceTime and iMessage - Apple Support

1. Sign in to an Apple ID on your iPhone. You will see all addresses verified with the account.
2. Tap an address to enable it on the device. The telephone number will be dimmed when you view these settings on an iPhone.

Thanks for using Apple Support Communities.

Have a good one,

Mario

The +1 just indicates the international dialling code for USA.