How many UCAS points is a grade A at Level worth?

There's no such thing as a "Level" in the UK grading system used for UCAS points. UCAS points are awarded for A-levels (and other qualifications like the Scottish Highers and International Baccalaureate). A-levels are graded A*, A, B, C, D, E, and U. An A grade at A-level is worth 120 UCAS points.