I just bend my iPod 5 so can I change it for free. I just bought it two month before

Accidental damage is not covered by the warranty

Apple will exchange your iPod for a refurbished one for this price. They do not fix yours.

Apple - iPod Repair price

No.

If your iPod was purchased with a credit card, check with the card company. Some cards provide Purchase Protection insurance which will replace or repair any item lost, stolen or damaged within 90 days of purchase.