あげれば

if (someone) gives, if (someone) does (something) for someone

→ 上げる
verb · informal Rare #38,605
if (someone) gives
JA: 友達に本をあげれば、喜ぶと思う。
EN: If I give my friend a book, I think they’ll be happy.
if (someone) does (something) for someone Used after the -て form of a verb to show doing something for another person.
JA: 手伝ってあげれば、早く終わるよ。
EN: If you help them, they’ll finish sooner.
Conjugation of 上げる
Conditional
あげれば

あの時、あの女の子をもっと優しく扱ってあげればよかった。

I wish I had treated that girl more kindly back then.

プレゼントをあげれば、彼はもっと喜ぶだろうか。

Would he be happier if I gave him a present?

あげればいい

You can just give it to them.

— ザ・マン・フロム・アース (2007)

赤ちゃんをあげればヴァネッサは幸せになる

If you give Vanessa a baby, she'll be happy.

— JUNO/ジュノ (2007)

じゃあ、あげれば?

Then why don't you give it to them?

— バジュランギおじさんと、小さな迷子 (2015)