does the ios 13 support face recognition

It's not the software, it's the hardware which is required for Face ID. An iPhone 8 does NOT have the required hardware to EVER use Face ID. It requires a True Depth camera, which only iPhone X, Xr, Xs, 11 and 11 Pro has.

If you'd like Face ID (it is a nice feature), you'd need a newer phone.

On devices that have the capability, yes. It will not add the capability to other devices.

kuntryboyDunaway wrote:

so it has to already have the face id recognition? i have an iphone 8 wich doesnt have face recognition also are does IOS13 come with lock on hidden photos album in the photo app?

See - About Face ID advanced technology - Apple Support. The true depth camera and the infrared projection light that maps the points to your face are hardware built into the “notch” on the display of the iPhones with it. You also need the right Apple processor to handle the data. So faceID is a combination of the right hardware and iOS. iOS itself cannot implement faceID without the necessary hardware.

The new iPhone 11 and 11 Pro have even gone beyond the X and Xs by adding a second true depth camera with a wid(er) angle lens to speed up faceID and improve the distance over which it will work.

iOS 13 will support faceID on device’s with a faceID camera, and touchID on devices with a home button and touch sensor.

Facial recognition is a hardware feature requiring a special camera. If your iPhone doesn't have such a camera there is no way to implement the feature with software.