Wordpress Customization

Hi I need some customization to this theme https://themeforest.net/item/mylisting-directory-listing-wordpress-theme/20593226 and this demo https://mylisting.27collective.net/my-city/ I have it uploaded and began making changes but my time is limited and I need some help. I need someone who knows how to completely modify wordpress themes and codings to make pages look and function as I need.