In bowling, a mark refers to any score that is recorded on the scoreboard. This can include strikes, spares, or open frames. A strike is scored when all ten pins are knocked down with the first ball of the frame. A spare is scored when all ten pins are knocked down by the end of the frame, but not with the first ball. An open frame is scored when not all ten pins are knocked down by the end of the frame.
In addition to these basic marks, there are also some special scores that can be achieved in bowling. For example, a perfect game is scored when a bowler rolls 12 strikes in a row, resulting in a score of 300. A turkey is scored when a bowler rolls three strikes in a row. A bagger is a term used to describe any string of strikes, such as a “four-bagger” for four strikes in a row.
I hope this helps! Let me know if you have any other questions.