Hi @4312, sorry to hear about this.
Your question has been translated to English as this is an International forum.
If you can't remember your screen lock and it's a PIN code, you can try using the Google service called "Find my Device" to put a new screen lock on your device.
If you can't set a new screen lock using this service, you will need to perform a software repair using Xperia Companion and all data stored on the internal storage will be deleted.
I hope that helps!
