Which one is correct?
This question is very low quality?
or
This question has very low quality?
or
This question has a very low quality?
Which one is correct?
This question is very low quality?
or
This question has very low quality?
or
This question has a very low quality?
We'll see the sentences you asked:
This question is very low quality - the question itself is a low-quality question. In other words - it's a low-quality question.
This question has very low quality - has suggests possession. The 'quality' here is the property of the question. Something like This question has a detailed view of the asker.
This question has a very low quality -it's the same as the second one but here, you are making 'quality' a countable noun. Quality is both uncountable and countable noun.
However, what looks natural to me is -"This question is of very low quality." OR "This is a very low-quality question."