To create a GPT partition scheme bootable USB you need to download a free software called “Rufus”.
- install Rufus and open it.
- Connect a USB minimum 8gb.
- In device tab choose your USB.
- In boot selection choose your Windows ISO image.
- in partition scheme select GPT.
- File system select NTFS.
- last part click on start.
That’s all you need to do I have a link on how to make bootable USB using Rufus in MBR so you can also get some idea from that link.