Does apple give warranty on their cases if yes how to claim it?

Hi there

All Apple devices come with the Apple limited warranty that covers the device, even accessories like the Apple branded case, for manufacturing defects within 1 year of purchase.

Apple says:

"The Apple Limited Warranty covers your iPhone and Apple-branded accessories against manufacturing issues for one year from the date you bought your product. The Apple Limited Warranty is in addition to rights provided by consumer law.

Our warranty doesn't cover damage caused by accidents or unauthorized modifications."

If you think the case has a manufacturing defect, you may Contact - Official Apple Support for further help.

Hope that helps!

it's not really up to apple to give warranty it's the laws of your country

Legal - Hardware Warranties - Apple