Can you please send me the minimum number of 〇〇 that you're permitted to ship?
Could you please ship me whatever number of 〇〇 you are allowed to send?
ーCan you please send me the minimum number of 〇〇 that you're permitted to ship?
「出荷できる〇〇の最低数を送ってもらえませんか？」
the minimum number of 〇〇 で「〇〇の最低数」
be permitted で「可能な・許される」
ーCould you please ship me whatever number of 〇〇 you are allowed to send?
「出荷できる〇〇をいくつでも良いので送ってもらえませんか？」
whatever number of 〇〇で「〇〇をどんな数でも」＝「いくつでも」
ご参考まで！
カナダ 
