It's easy to attach an old D-sub RGB DE-15 VESA, DB-15 or HD-15 cable to an RPi. You just need a cheap HDMI to VGA adaptor, which are available for USD 5 or even less on Amazon and eBay. An excellent keyword is "HDMI Male to VGA", then sort by price.
I don't know what the screen is but its specs are 14" inch 1024x768 and its adapter is:
LIEN CHANG
BSA-35-115
110-240V/1A 47-63Hz
DC OUTPUT: 10-17V/3.5A MAX
NOMINAL VOLTAGE: 12V
NOMINAL CURRENT: 2.9A
OUTPUT POWER: 35W MAX
POWER SUPPLY
Like & subscribe for more tech videos! / @sosotechtube
Title image credits:
https://commons.wikimedia.org/wiki/Fi... by Jonathan Rutheiser under CC-BY-SA 3.0