If you are not bothered about something, it is not important to you or does not worry you.

"Tea or coffee?" "Either - I'm not bothered." “你要茶还是咖啡?”“随便──都可以。”

I'm not bothered whether I go or not. 我去不去都无所谓。

You choose something for dinner. I'm really not bothered.

Honestly, if you'd rather we didn't go to the party, I'm not bothered.

I told William to make a decision about which apartment to rent because I'm not bothered either way.

If you'd rather stay at home, I'm really not bothered.