According to the product information, PASTILUSHKA apple pastille has no added sugar. The sweetness comes from the apples themselves, and the base is apple puree rather than a long list of syrups and sweeteners. That does not mean it is sugar-free: apples naturally contain fructose and glucose, and these fruit sugars are still carbohydrates that count toward your daily intake.
If you are trying to reduce added sugar, this type of sweet can be a practical step down from conventional candy, because it is built around a single fruit ingredient. It remains a sweet food, so portion size matters. A few pieces as a snack or with tea can fit into a balanced routine, but eating the whole package would add a noticeable amount of fruit sugar at once.
Read the back label before buying if you are strictly avoiding all sweeteners or checking for other ingredients, since recipes can change. If you are on a sugar-controlled eating plan, for example for diabetes or another metabolic condition, check with a doctor or dietitian how this fits into your daily menu.