To remove SKU from Single product page you can add this PHP Snippet in functions.php of child-theme – https://businessbloomer.com/woocommerce-hide-sku-front-end/
add_filter( 'wc_product_sku_enabled', 'custom_remove_product_page_sku' );
function custom_remove_product_page_sku( $enabled ) {
if ( !is_admin() && is_product() ) {
return false;
}
return $enabled;
}
OR
add this code in Theme Options > Custom CSS > Global custom CSS:
.single-product .product_meta .sku_wrapper {
display: none;
}
Regards