How many stars are 1 light year from the stars?

Answer 1

I assume that you meant to ask "How many stars are 1 light year from the earth?"

The answer is none.

The closest star to us is Alpha Centauri which is 4 light years away.

Unless you count our own sun which is 8 light minutes from the earth.

If you meant to ask "How many stars are 1 light year from any other stars?"

Then the answer is very many.

There are many places within our Milky Way galaxy where stars are close together, especially near the center of the galaxy.