Scoring a wine is left up to the professionals but they don't have the same tongue that you or I do. We all have different tastes. Similarly, not everyone likes spicy food while others love their food with spices. The same with wine, somebody might score a wine, a shiraz for example, a 96/100 but not everyone will enjoy that shiraz.
Here is a link that I use consistently to appreciate the wine that I enjoy, along with a video showing that a wine does not need to be bought on rating but enjoyed with friends, family, colleagues or wine lovers to make a memorable lunch, dinner or night.
Peace