The phrase "huge amount" is correct and usable in written English. You can use it when you want to describe a great deal or a large quantity of something. For example, "He had a huge amount of work to do each day."
A huge amount".
Huge amount of paperwork.
This is a huge amount of energy.
"That's a huge amount of trust.
Coaches deserve a huge amount of credit.
That's a huge amount of damages.
A huge amount goes on between banks.
There is a huge amount at stake.
A huge amount of money is involved.
We owe a huge amount to him".
Not a huge amount, oddly.
Being a terminologist, I care about word choice. Ludwig simply helps me pick the best words for any translation. Five stars!
Maria Pia Montoro
Terminologist and Q/A Analyst @ Translation Centre for the Bodies of the European Union