Actually doing sports is more important than which sport you choose
It doesn't matter which sport you choose. Doing something is the most important thing.
Doing something is more important than doing nothing
「どのスポーツかが大事でなく、スポーツをすること自体が大事」＝ Actually doing sports is more important than which sport you choose / It doesn't matter which sport you choose. Doing something is the most important thing. / Doing something is more important than doing nothing
ボキャブラリー
actually doing sports ＝ スポーツをすること自体
more important than ＝ ～より大事
which sport you choose ＝ 選ぶスポーツ
It doesn't matter ＝ 構わない、大事でなく
イギリス 
