Apple shares personal information with companies who provide services such as information processing, extending credit, fulfilling customer orders, delivering products to you, managing and enhancing customer data, providing customer service, assessing your interest in our products and services, and conducting customer research or satisfaction surveys. These companies are obligated to protect your information and may be located wherever Apple operates.
You're free to speculate on the worst possible implications of their privacy policy too. Here's an excerpt from https://www.apple.com/legal/privacy/en-ww/
Service Providers
Apple shares personal information with companies who provide services such as information processing, extending credit, fulfilling customer orders, delivering products to you, managing and enhancing customer data, providing customer service, assessing your interest in our products and services, and conducting customer research or satisfaction surveys. These companies are obligated to protect your information and may be located wherever Apple operates.