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

1.
一文不值, 毫無價值
something of little or no value or importance (usually used in negative constructions)
:
•
His opinion isn't worth a hill of beans to me.
他的意見對我來說一文不值。
•
Without proper funding, their plans aren't worth a hill of beans.
沒有足夠的資金,他們的計劃一文不值。