You need to search VGA (or HDMI) to SCART Converter.
BUT...VGA and HDMI are digital
SCART (or S-Video/Composite if the telly has those)are analogue.
So the cheap cables don't work. You need a Converter box and these typically cost 10's or many 10's of pounds and quality ain't great.
Probably easier to buy a new cheap flat screen with VGA/PC/HDMI inputs.