How do I create a High Sierra bootable thumb drive for a friend?

[ravinder08]

A friend needs a bootable thumb drive of High Sierra, I have been on to the APP store but can't find it, can anyone help?

 

[CoastalOR]

Here are Apples instructions with a link to High Sierra in Step 4:

How to download and install macOS - Apple Support

Download and install current or previous versions of the Mac operating system on compatible Mac computers.

support.apple.com

EDIT: Here are Apples instructions for making a bootable installer:

Create a bootable installer for macOS - Apple Support

You can use a USB flash drive or other secondary volume as a startup disk from which to install the Mac operating system. These steps are primarily for system administrators and other experienced users.

support.apple.com