No again I can't see whats coming front hr wall but it appears to be a threaded end. You will need a threaded compression valve to twist into the existing pipe, compression only works on copper.

I recommend shopping for parts through supplyhouse.com. you can even call and they will take you through what you'll need.

The stub coming from the wall being threaded will require a female end quarter stop to 3/8 threaded end for your T to attach your water line to fridge and the cold water for your faucet mixer.