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

1.
ne pas valoir un clou, sans valeur
something of little or no value or importance (usually used in negative constructions)
:
•
His opinion isn't worth a hill of beans to me.
Son opinion ne vaut pas un clou pour moi.
•
Without proper funding, their plans aren't worth a hill of beans.
Sans financement adéquat, leurs plans ne valent pas un clou.