やっても

even if doing; may do

→ 遣る
phrase Uncommon #10,570
even if doing; may do やっても is the て-form of やる followed by も. With a negative or unfavorable result, it commonly means “even if someone does it”; in やってもいい, it means “may do” or “it’s okay to do.”
JA: これをやっても大丈夫ですか?
EN: Is it okay if I do this?

一日やっても覚えられない

Even after practicing all day, I still can't remember it.

— ブエノスアイレス (1997)

彼はどれだけ一生懸命やっても試験に受かるのはむりだろう

No matter how hard he tries, he probably won't be able to pass the exam.

どんなに一生懸命にやってもわたしにその問題解けなかった

No matter how hard I tried, I couldn't solve the problem.

なんやってもいない殺人自白する人がいるのよ

Why would anyone confess to a murder they didn't commit?

— 親切なクムジャさん (2005)

いくら一生懸命やってもそう簡単に成功するものではない

No matter how hard you try, success doesn't come that easily.

どんな方法でやっても結果は同じだろう

No matter how you do it, the result will be the same.

そんなことやっても時間の無駄にすぎない

Doing that would be nothing but a waste of time.

俺なんかどうせやっても無駄だよ

There's no point in someone like me even trying.

説明書通りにやってもうまくいかない

Even when I follow the instructions, it doesn’t work properly.