Fighting style error

When I pick great weapon fighting as a paladin it shows up as two weapon fighting on the character sheet

You're likely getting Two-Weapon Fighting and Two-Weapon Fighting Fighting Style mixed up. They're two separate things.

Two-Weapon Fighting is something everyone gets.

If you're not getting mixed up - then link the character so a mod can take a look to see what's going on.

ah your right sorry didnt realise that thanks

It really is an unfortunate naming convention that seems designed to cause confusion - so I wouldn't worry about it.