Hello,
All settings for the “Brands” you can find in Theme Settings -> Shop -> Brands, also via Products -> Attributes -> brands attributes (https://prnt.sc/0r722qhXBb_7).
The typography for the “Brand” text you can change through Theme Settings -> Typography -> Advanced -> create a rule and set the “Custom Selector” item with the below custom selector.
.single-product .wd-product-brands .woodmart-product-brand
You can remove the “bold” style for the last breadcrumb via the custom code, paste it into the “Global Custom CSS” area in Theme Settings -> Custom CSS
.woocommerce-breadcrumb .breadcrumb-last {
font-weight: 400;
}
Kind Regards