why the women doesn't have any role in the play?

The Caretaker tells the story of two brothers. One of them rescues a homeless man from a fight at a neighbourhood bar. He invited to spend the night in the brothers' flat. There are only a few characters in this book (involving the above) which explains the lack of women.

Thank you for your answer,

I know that but is there any signification about not mentioning women in this play?

Is it because it's an absurd theater??

No, I don't think absurdist theatre lacked women characters, though I'm not an expert. I think the plot and the few characters in it just didn't involve female characters.