Normally it lasts 5-7 days if used properly.
This depends on various factors, including the adhesive strength of the gel sheet, the method of application, and daily care.
However, if used improperly, gaps will form between the gel sheet and the natural nail, which may allow water and dust to enter, causing the press-on nails to fall off easily. This is also related to your daily hand habits. If you often use your hands to type on the keyboard, do housework, etc., your press-on nails will also fall off more easily.