MacBook warranty

That depends on where it was bought exactly.

Apple includes 1 year warranty with all its products in most countries. Some countries specially in Europe require 2 years of warranty by law and Apple follows that requirement in those countries offering 2 years of warranty.

You can enter your Mac's serial number at link-> Check Your Service and Support Coverage - Apple Support to verify your warranty status.

In the US, it's one year. In other countries, it may be longer.