Windows install will have a back up bootloader that you can copy over or you can use the install media
I’ll give the install media instructions, you can do it from your Linux install if it’s able to see the Windows files
Launch Command Prompt with Shift+F10
List Disks with
list disk
Select desired disk with
sel disk #
Create the boot partition
create partition efi size=100
Select Boot
sel partition 1
Format Boot
format fs=FAT32 quick
Assign Boot partition
assign letter=g:
Copy the boot files to the partition
bcdboot c:\Windows /s G: /f ALL
youtube.com/watch?v=QwNoFOUiSiE