Every time a girl talks about it, at most 27 people like it, never more than 30, at least a few people like it, or even none. What is the meaning of this?

It shows that this girl doesn't make friends or has few friends, so there won't be many people who praise her.

On the other hand, it also shows that this girl's expressive ability is not very strong, and her speech is not attractive, which is not particularly satisfactory.

It also shows that this girl is usually reluctant to praise others. If she likes others at ordinary times, others will praise her, no matter how she takes it.