If i bring in 2 buddies to donate on the same day will inget the bonus for both of them for referring both

No it is after your buddies each donate their second time. After that you have to tell them you have a buddy bonus and only then will you get it.

No it’s after the first one my bf brought me and he got his extra money right after I was done

Its wenever dey want to pay u

I think it's after their 2nd donation