Answer 1

He has 30 altogether. But they are all at Professor's Lab and he has only used one of the thirty for battle.

Ash spent some time in the Safari Zone in the episode EP035. He was
attempting to catch as many Pokémon as possible, though all he ended
up with were thirty Tauros as they always ran in front of his Safari
Balls when he tried to make a catch. At the end of Ash's adventures in
the Safari Zone, all thirty Tauros were sent to Professor Oak's
laboratory.

Bulbapedia's page has all you need to know about this.

Comments

LOL. That sums Ash up in one quote.
Stupid Boy.

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Why u calling me stupid? Cus I'll tell you as a fact that I am not.

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i think he meant Ash

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what do you get when you slice ash ketchums head? ash KETCHUP everywere