Mohammed Musa you are right. No teardown or guide for it yet. Download the maintenance manual for it [https://download.lenovo.com/consumer/mobiles_pub/duet3_hmm.pdf|from here] to work on it. While you do so, create a guide for the next person that may need one. It's really easy to do and will help https://www.ifixit.com/Guide/new the next person.
Yes, the screws are regular TORX screws. Those are M2 screws so I expect it to be around the T3 to T5 range.