In any of the variants of 10-pin Bowling (including Duckpins or candlepins), each pin is worth one point.
However, when you are scoring a strike (all pins down on first ball) or spare (all pins down on 2nd ball), the scoring is more complex.
For a spare, the score is 10 plus the number of pins knocked down on the first ball of the next frame (so, for example, a spare followed by a 7 count would be 17)
For a strike, the score is 10 plus the number of pins knocked down on the next two balls thrown (so, for example, a strike followed by a 7 count then a completed spare would be 10+7+3 = 20). The most points that could be scored in a frame would be a strike followed by a strike, followed by another strike, 10+10+10 = 30.
This gives us the maximum possible bowling score of 300 (10 frames, maximum of 30 pins in each).
If a strike or spare is thrown in the 10th and final frame, the bowler immediately throws one (in the case of a spare) or two (for a strike) bonus balls, called "extra frames". These frames do not score on their own, they only serve to determine the extra pins for the 10th frame's mark.
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It would depend on if the lanes are tenpin bowling lanes or different. It would also depend on the type of pinsetters. Each lane typically has a total of 20-22 pins, of which 10 are set and the other 10 are in the machine waiting to be set on the next frame.