My dog always screeches when i come home rom work please help me how to stop this!?

Make your home coming very low key. Do not acknowledge the dog. Just let her outside immediately to do her business. Do not go with her unless you need to. Let her back in after 5-10 minutes. When she comes back in use a very small soft greeting. Again you don't want to reeve her up. Keep everything quiet and calm. If she starts shrieking after you let her in have her do a calming exercise like a short sit or down stay. A firm quiet command should help if this gets too out of control and if your dog has an understanding of the command. Some people use a spray bottle with water in it for the screaming but keep in mind it might make your dog fearful of your arrival which has its own consequences.