A product is generally considered "high sugar" if it contains more than 22.5g of total sugar per 100g, and "low sugar" if it has 5g or less.
The FDA Nutrition Facts Label lists "Total Sugars" (natural + added) and "Added Sugars" separately. 4 grams equals roughly 1 teaspoon. esugajfzip
However, if you are looking for information related to "sugar content" (a phonetic similarity), A product is generally considered "high sugar" if
Less than 24g (6 teaspoons) per day; children under age 2 should have no added sugar. How to Spot Sugar Content in Food esugajfzip