There are many ways runs can be scored that too without using the cricket bat. Some examples are:
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A ball bowled by a bowler can be declared a no ball in two cases
1. When the ball is very high and goes beyond the shoulder of the batsman
2. When the bowler keeps his foot outside the landing crease on the Bowling end
3. If the ball does not hit the ground and is higher than the batsmans waist
If you mean getting out for 0 this is called a duck, getting out first ball is a golden duck.