How do i duplicate the ocean modifier or how do i remove the driver and still have its effect on the mesh ?

What are you trying to achieve? You can't really remove the driver and still have its effect, so depending on what you are trying to do there should be other ways to achieve what you are after.

You can duplicate any modifier from the dropdown menu on the header of the modifier or with the mouse cursor over the modifier use SHIFT+D.

You can remove the driver by right clicking on the field with the driver on it and select delete driver.
But you can't delete a driver and still have the effect of the driver.

You can probably export the mesh as a mesh cache (.mdd). Here's a video about it (in Korean but you can enable auto-translated language in the CC settings):