Nutrition labels contain a lot of numbers and most people either ignore them or read the wrong parts.
Check the portion size first
Everything else on the panel refers to it, and manufacturers choose it. A package that looks like one serving frequently declares two or three, which halves or thirds every number shown.
Comparing two products means comparing per hundred grams, not per serving, because the servings differ.
The ingredients list is more informative than the panel
Listed in descending order by weight. If sugar or a sugar synonym appears in the first three, the product is substantially sugar regardless of what the front says.
A long list of things you do not recognise indicates heavy processing, which is associated with worse outcomes independent of the nutrient content.
What to look at
Sugar, specifically added sugar where it is separated out. Fruit contains sugar and comes with fibre and nutrients; added sugar does not.
Fibre, which most people eat too little of and which is one of the better markers of a food being genuinely useful.
Salt, which accumulates from processed food far more than from the salt shaker.
What to largely ignore
Front-of-pack claims. Low fat frequently means higher sugar. Natural means nothing defined. Fortified means a nutrient was added to a product that needed the marketing.
The shortcut
Short ingredient list, recognisable ingredients, meaningful fibre. That covers most of what reading a label would tell you.