This article explains how to backup and restore your Chrome bookmarks using simple HTML files that you can easily save to a USB drive, network attached storage, or in the cloud.
Google Chrome Backup Your Bookmarks NOW & How to Backup Bookmarks in Google Chrome
If you don't use a Google account or want to keep a copy of your bookmarks on your hard drive, network, or USB stick, you can learn how to create a backup here.
Find and select the icon with three vertical dots in the upper-right corner of the Chrome window.
Find Bookmarks in the drop-down menu that appears.