If you do not hav a "chalker" also called a scorekeeper then yes you have to write down your own score.
The least number of darts needed to score 501 points in a standard game of darts is 9 darts. This can be achieved by scoring three triple 20s (60 points each for a total of 180 points) and then finishing with three more darts that score 180 points combined, such as two triple 20s and a double 20.
The smallest number that you can't score with 3 darts, not including 1, is 4. With 3 darts, you can score any number from 3 (by hitting a score of 1 with each dart) up to 60 (hitting three triple 20s), but you cannot reach the score of 4 using the available scores on a dartboard.
625
12. Treble, single and double 12.
maximum score at darts
Most games start out with a score of 301. Then after hitting certain numbers on the board, your score goes down. The winner is the first one to get their score down to 0.
Impossible as maximum score with 2 darts is 120! T17-D20 and T19-D17
Darts
You can score 180 on darts
60, the highest single-dart score on the board
12
180 is the highest score in darts. Three triple 20s is worth 180 points.
A shanghai is a single, a double, and a triple of the same number in one throw of three darts.
507
420
Darts.
625