How to get my data

If the phone itself is still turning on and you have a computer which has a trust relationship with the phone (Has previously been connected to the computer and you elected trust when asked by the phone) its just a matter of plugging it into the computer and using iTunes to import the photos.

Otherwise the easiest way to retrieve the photos would be put a new screen on temporarily so you can establish a trust relationship and import the photos, if you don't have access to a screen or don't want to buy one just to get the photos then your local repair shop will have them and should be able to retrieve the photos using a temporary screen for cheaper than it may cost you to buy one.