会うのは

as for meeting

→ 会う
phrase Common #5,734
as for meeting の turns 会う (“to meet”) into a noun-like phrase, and は marks it as the topic. The full meaning depends on what follows.
JA: 友達に会うのは楽しみです。
EN: I’m looking forward to meeting my friend.

仕事の後で会うのはどうかしら?

How about meeting after work?

有名人と偶然会うのは珍しい。

It’s rare to run into a celebrity by chance.

会うのは週末だけよ。

We only see each other on weekends.

ネッサ、会うのはこれが最後じゃないよ。

Nessa, this won’t be the last time we see each other.

— ウィキッド 永遠の約束 (2025)

キューバで会うのはジェセップ大佐よ

The person you'll meet in Cuba is Colonel Jessup.

— ア・フュー・グッドメン (1992)

君にここで会うのは全く意外だ。

I’m completely surprised to run into you here.

私が彼と会うのは、たいていその喫茶店だ。

I usually meet him at that coffee shop.

大臣に会うのは初めてかね?

Is this your first time meeting a minister?

— 暗殺の森 (1971)

会うのはずいぶん久しぶりだ

It’s been a long time since we last saw each other.

— Брат 2 (2000)

訪問者を嫌がるかも機嫌の悪い日に会うのはまずいからな

They might not take kindly to visitors, and it would be bad to see them on a day when they’re in a bad mood.

— 28年後... 白骨の神殿 (2026)

今度会うのは、いつになるかな?

I wonder when we'll see each other next.