have a right to
Have a just or legal claim on something or on some action, as in The accused has a right to legal counsel. The related have the right to is often used with infinitives, as in You have the right to remain silent.
What does it mean when someone has the right to do something?
To have the freedom or the just or legal permission, privilege, or authority to do something.
Are right or have right?
The correct phrase for the action you're describing would be "You are right". "You have right" is not a valid English phrase, although "You have it right" would be understandable to an English speaker.
