This is the 2805th most frequent Japanese word.
関わっ
"関わっ" means "to be involved" or "to be related."
In this sentence, 関わっている indicates that someone is actively and directly involved in a certain task or project.
彼は新しいプロジェクトに関わっている。
He is involved in the new project.
Here, 関わらない is used to suggest someone should refrain from or avoid getting involved with a particular matter.
その問題には関わらない方がいいと思います。
I think it is better not to get involved in that issue.
In this sentence, 関わる is used to mean being related or closely connected to a certain field or topic.