If the copied creature is a token, the token that’s created copies the original characteristics of that token as stated by the effect that created that token.

The tokens each copy exactly what was printed on the original creature and nothing else (unless that creature is copying something else or is a token; see below). It doesn’t copy whether that creature is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on.

If the copied creature has in its mana cost, X is 0.

If the copied creature is copying something else, then the token enters the battlefield as whatever that creature copied.

Any enters-the-battlefield abilities of the copied creature will trigger when the token enters the battlefield. Any “as [this creature] enters the battlefield” or “[this creature] enters the battlefield with” abilities of the copied creature will also work.