Why my dad don’t want me making more money than him ?

He's overly prideful in the wrong way. Most parents WANT their children to do better than they did. But a narcissist would just be thinking about himself and his own bruised ego.

maybe hes jealous about it

Are you making more than him, or is it just a dream fantasy you have? If you're earning more, it's really none of his business, unless you are gloating.

Because he's jealous