Do you have a year to buy AppleCare in the US

Here's what the US support site says: AppleCare Products - iPhone - Apple

How to buy

1. Purchase either AppleCare+ product with your new iPhone.
2. Or buy it within 60 days of your iPhone purchase:

• • On your device (go to Settings > General > About and choose AppleCare+ Coverage Available)
  • Online (requires you to verify your serial number and run a remote diagnostic)
  • At an Apple Store (inspection of iPhone and proof of purchase are required)
  • By calling 800-275-2273 (requires you to run a remote diagnostic and provide proof of purchase)

For the most detailed account, read the AppleCare+ for iPhone Terms and Conditions: https://www.apple.com/legal/sales-support/applecare/applecareplus/2209/220907_applecareplus_us.pdf

In most countries and regions, you can buy AppleCare+ within 60 days of your device purchase. You can start the process here: Buy an AppleCare plan - Apple Support. 1 year is the length of the Limited Warranty that comes with your iPhone purchase. Hope this helps, and have a great day!