'Has been'or 'Had been' ??

Neither. What an epic match it was.

Why is that so ?

Sherinya Why is that so ?

If it "has been epic" then you are still there at the match.
That contradicts the fact that it happened yesterday or ever further in the past.

If it "had been epic" then it happened before something else.
There's no other event or action mentioned in your sentence.

So it can't be either of those. It's "was",

So, you mean one can use 'had been' only if there is an other even mentioned with it? Is it the same with all the cases?

Event*

Could please explain how I can modify the sentence in order to use 'had been' in the place of 'was'?

SherinyaSo, you mean one can use 'had been' only if there is an other even mentioned with it?

Yes, either in the same sentence or in previous sentences.

SherinyaIs it the same with all the cases?

Yes, for all the usual uses of the past perfect. There are few exceptions.

CJ

Sherinya Could please explain how I can modify the sentence in order to use 'had been' in the place of 'was'?

You can't because it's exclamatory. In this case you'd have to write a story in the past with a few sentences. This would set up a situation where you were talking in reference to some point in time in the past. Then you would use your exclamation w

So, if I say "It had been a fine week until emma showed up", would the sentence be correct?

Yes, if you capitalise the first letter of the name.