These settings affect the dimensions of your product images in the shop pages. If you installed the theme on an existing site, you need to make sure the product image sizes in WooCommerce are the correct ones for your newly installed theme.
1. Navigate to WooCommerce > Settings > Products > Display , scroll down to the “Product Image Sizes” section and update those values with the following ones:
2. To see the changes after you update the image sizes, you need to re-generate the images WordPress is using in your site. You can find the option to do it by navigating to Tools > Regen. Thumbnails.
Here you can find the plugin in case it's not installed or you haven't done this before.