I googled and a lot of People shows that if you switch to Bios boot the windows 10 iso will boot. But this isnt't the right solution. I searched for the solution that let me boot uefi with windows 10 in vmware workstation 15.5.
Maybe we have to add a entry in configuration file
Windows 10 ISO should boot in UEFI mode. If you made the ISO yourself, make sure you included a UEFI boot image in it (how to do that depends on what software you use for creating the ISO file; with Microsoft's oscdimg.exe, you'd use something like -bootdata:2#p0,e,bimg\boot\etfsboot.com#pEF,e,bimg\efi\microsoft\boot\efisys.bin).
I used the original https://www.microsoft.com/de-de/evalcenter/evaluate-windows-10-enterprise Trial. And this ISO definitly boots on UEFI
So you try it yourself. Use Vwmare Workstation 15.5
Make a new virtual machine with the windows 10 Enterprise iso (64Bit)
Select uefi and try
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I've been using UEFI booting on VMWare Workstation for years (even before it was added as a GUI option). My own Windows 10 VMs have always been UEFI (as are Windows 8 and 7 VMs).
I downloaded 19042.631.201119-0144.20h2_release_svc_refresh_CLIENTENTERPRISEEVAL_OEMRET_x64FRE_en-gb.iso from the link above, and it boots fine in UEFI mode for me (on Workstation 16.1, but there shouldn't be any difference in Workstation 15).