Hello,

1. Category text comes with WooCommerce plugin and should be translated in its PO file.

2. Here is a code snippet to make social icons be inline with categories

.single-product-content .woocommerce-product-details__short-description {
    border-bottom: 1px solid rgba(119,119,119,.17);
    padding-bottom: 15px;
    margin-bottom: 30px;
}

.single-product-content .summary-inner .product_meta {
		margin-top: 0px;
		padding-top: 0px;
		border-top: none;
		display: inline-block;
}

.single-product-content .summary-inner .product-share {
		display: inline-block;
		margin-left: 15px;
}

3. You need to regenerate all thumbnails after changes with images sizes.

Regards