Assuming you would like instructions on how to transfer photos from your iPhone to a computer:
First, connect your iPhone to the computer with a USB cable. If this is the first time connecting the two devices, you may need to unlock your iPhone and trust the computer.
Once the devices are connected, open iTunes (if it doesn't open automatically). Click on the device icon in the upper left corner of iTunes. In the main window that appears, click Photos.
Check the box next to Sync Photos and then choose how you would like to sync your photos: with iCloud Photos, My Photo Stream, or both. If you use iCloud Photos, make sure that Optimize Storage is checked so that full-resolution versions of your photos are stored on your computer only when there's enough space. You can also choose whether synced photos should be removed from your iPhone when they're deleted from your computer photo library. When you're finished making changes, click Apply in the lower right corner of iTunes.
It may take a few moments for all of your photos to sync over—be patient! Once they've transferred successfully, you can view them in Apple's Photos app (Mac) or Windows 10's Photos app (PC).