What is the price to replace the front screen of a damaged iPhone?

The cost to replace the front screen of a damaged iPhone varies depending on the model of your iPhone and your location. Generally, the cost can range from $129 to $329 for an out-of-warranty screen replacement from Apple, depending on the model of the iPhone. However, if you have AppleCare+ coverage, the cost may be significantly lower. Prices may also vary depending on where you get the repair done, It's best to check with Apple to get an accurate quote for the cost of replacing your iPhone screen.

For further information visit:iPhone Repair & Service - Apple Support

Follow the link that Rudegar has provided. In addition, it cannot be over-stressed that If your screen needs replacing and you don't want to experience problems, you should go to an Apple Store or to an Authorised Apple Service provider and ensure that only genuine Apple parts are used to repair your iPhone. If you try to save money by having a replacement carried out by an unauthorised technician, you will regret it.

check here iPhone Screen Repair & Replacement - Apple Support