Here is what I got after a Google search with “HP Pavilion x360 m3-u103dx “:
https://www.laptopscreen.com/English/model/HP-Compaq/PAVILION~X360~M3-U103DX/
and HP’s website:
https://h30434.www3.hp.com/t5/Notebook-Hardware-and-Upgrade-Questions/Replace-cracked-screen-on-HP-Pavilion-x360-m3-Convertible-m3/td-p/6226153
with the actual part number and the service guide which you should download.
Hope this helps.