上手です

is good at

→ 上手だ
phrase Rare #25,643
is good at A polite way to say someone is skilled at something. The activity or skill is often marked with が.
JA: 妹は料理が上手です。
EN: My younger sister is good at cooking.

彼女はバイオリンが大変上手です。

She plays the violin very well.

私―燃やすのは上手ですからの

Me—I’m good at burning things, you know.

— Departures (2008)

太郎は、ギターを弾くのがクラスで一番上手です。

Taro is the best guitarist in his class.

山田さんはギターも弾けるし歌も上手です。

Mr. Yamada can play the guitar and sing well, too.

彼はギターが大変上手です。

He plays the guitar very well.

トムもメアリーも歌がとても上手です。

Both Tom and Mary are very good singers.

上手です

You're good at it.

— パディントン2 (2017)