I have a 6 week old kitten and she is not eating or drinking or using the bathroom and very lethragic want to to know what she has

Kitten is vey lethrgic and not eating anything or drinking or using the bathroom and weak HELP wats wrong with her?

Too many things could be going wrong here.
Low blood sugar, anemia, chilled and the list goes on.
Her best chance is to get to the vet as quickly as you can take her.