Help to build Shopify store and integrate with webkul marketplace app

Request details I have two main needs. I have a design, font, logo, colour palette and icon asset for logo, but i need some help withe editing the CSS on Shopifty to full integrate it. I need help with more complex coding one page of the website. Which will need to pull data from the Webkul Marketplace app. It will be a conditional filter list (I think) which will pull the relevant tags/filters from the webkul app. Essentially users will answer a series of the questions and based on their answers, different vendor products will be shown as options. From there the user can select/add to cart. My Shopify store is in draft stage.