Hello,
First of all thanks for choosing our Theme, we are glad to be you in the WoodMart WordPress family :-)
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I saw the screenshots you attached.
The product and categories images are controlled by WooCommerce and our theme doesn’t influence them. WooCommerce provides settings for images that you can access under Appearance >> Customize >> WooCommerce >> Product Images.
Screenshot for Clarification: https://ibb.co/n7Ldh6x
If you want the categories images to be displayed in the same resolution in which they are uploaded then you need to set the images width and set to crop.
Note: These settings work for both product categories and product images.
Best Regards.