Unfortunately, Shopify Shipping is currently unavailable for deliveries from Mexico.
To facilitate shipping, you'll need to identify a suitable shipping company based on factors such as the nature of your product, cost considerations, and the specific regions you intend to cover.
For shipments from Mexico to the USA, reputable companies like FedEx and UPS offer discounted rates, particularly beneficial for small and medium-sized business owners. You need to contact them to create an account. Once your account is set up, you can create shipment labels directly from their websites.