“11-point” can mean a few things depending on context:

• Typography: an 11-point font is text sized at 11 points (slightly larger than 10-point text).
• Scoring / rating: an 11-point scale is a system that measures something from 0–10 or 1–11, depending on design.
• Sports (less common): could refer to an 11-point lead or a game played to 11 points (common in table tennis or volleyball scoring systems).

So, it generally means something measured, sized, or scored at eleven points.