a hill of beans
US /ə hɪl əv biːnz/
UK /ə hɪl əv biːnz/

1.
no valer un comino, sin importancia
something of little or no value or importance (usually used in negative constructions)
:
•
His opinion isn't worth a hill of beans to me.
Su opinión no me importa un comino.
•
Without proper funding, their plans aren't worth a hill of beans.
Sin financiación adecuada, sus planes no valen un comino.