for what it is worth
for
fɔ:
faw
what
wɒt
vot
it
ɪt
it
is
ɪz
iz
worth
wɜ:θ
vēth

英語での「for what it is worth」の定義と意味

for what it is worth
01

used before a comment or opinion to indicate that the speaker is sharing it, even though they may not be sure of its value or significance 

慣用句
I'm not an expert on the matter, but for what it's worth, I think you should consult a professional. 
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