buy now or add to cart

You mean you want to change the text on the buttons?

We have a snippet for that over here: https://docs.woothemes.com/document/change-add-to-cart-button-text/

Not just text/label of the button, rather I want to change the process to buy the product instead of adding the in cart, so no cart direct buy functionality.

Thanks a lot for your time.

please let me if there any possibility for such customization woocommerce have or not.