Click or double-click the Chrome app icon, which resembles a red, yellow, green, and blue sphere.
Click as shown as above image It’s in the top-right corner of the window. Clicking it causes a drop-down menu to appear.
Now Select Bookmarks this option is near the top of the drop-down menu Selecting it prompts a pop-out menu.
Now Click Bookmark manager. It’s in the pop-out window. Doing so opens the Bookmarks Manager in a new tab.
Now you Open the Bookmarks menu. Click the ⋮ icon in the far-right side of the blue banner that’s at the top of the Bookmarks window. A drop-down menu will appear.
Make sure you don’t click the ⋮ icon that’s either to the right of an individual bookmark or in the upper-right corner of the Chrome window’s grey section, as neither of these will give you the proper options.
Now click on export bookmarks. It will open a File Explorer
If you can't see the option then you are on wrong side.
Now Enter a name “it will be anything what you wish to enter”.
Now Select the save location where you want to save it always on left side just navigate it.
Finally you have to just click on save button as shown above image and you are done.