YOU SAID:

if i get 1000 likes ill make my brother buy me robux (ill pay him back)

INTO JAPANESE

私が1000のいいねを取得した場合、私の兄にrobuxを買わせます（彼に返済します）

BACK INTO ENGLISH

If I get 1000 likes, get my brother to buy robux (repay him)

INTO JAPANESE

いいねが1000個もらったら、兄にrobuxを買ってもらいましょう（返済）

BACK INTO ENGLISH

If you get 1000 likes, ask your brother to buy robux (repayment)

INTO JAPANESE

いいねが1000個もらったら、お兄ちゃんにrobux（返済）を買ってもらいましょう

BACK INTO ENGLISH

If you get 1000 likes, ask your brother to buy robux (repayment)