Upon checking, the ability to do this is not yet available in the standard NetSuite account. This is currently an enhancement request logged on Enhancement #396224 Add barcode on saved search and Enhancement #326870 Saved Search / Report > pull up Bar Codes.
But then there is a workaround for this.
What you will need:
1) Downloadable font uploaded to NetSuite file cabinet.
2)Formula (HTML) in saved search column.
Steps to use Google Fonts
Navigate to https://fonts.google.com
-Pick a font and configure size etc by moving the slider on the right side of the page.
-After picking a font, click + Select this style.
-Download the font family.
-Find the file and unzip the file and then upload the font file (.ttf extension) to the NetSuite File Cabinet in the Fonts folder. Or create a New Folder.
-Once it's uploaded, click Edit on the file.
-Check the Available Without Login checkbox.
-Copy the URL field (not the URL on the browser!) that's on the left side of the form under Description.
I have used LibreBarcode39Text-Regular.
Open your saved search and add a Formula (HTML) column.
Copy and paste this formula changing the font-family and URL and reference the File Name of the font you uploaded (minus the .ttf)
Formula to be used:
'<style> @font-face { font-family: LibreBarcode39Text-Regular; src: url(THE_URL_FROM_STEP)}</style><div style="font-family:LibreBarcode39Text-Regular;font-size:30pt;">' || UPPER({upccode}) || '</div>'
In the above case {upccode} is the field id used, you can use any.
Save your saved search.
Hope this helps.