He doesn't wants to read Snow White.

Is that a sentence

The usage of the verb want is incorrect.

He doesn't want to read Snow White.
That is a sentence.

yeah, but the correct way to write it would be: He doesn't want to read Snow White.

no but this is He doesnt want to read snow white

he doesnt want to read snow white becuse.... now finish it

No, the sentence you provided is not grammatically correct. It should be: "He doesn't want to read Snow White."