I'm still waiting to hear back from people on different matters, but there hasn't been a reply from them yet.
But please reply to this email, as I would like this one to be prioritized.
ご質問ありがとうございます。
① "I'm still waiting to hear back from people on different matters,"=「まだそれぞれ違う案件で人々からの返事を待っています」
"but there hasn't been a reply from them yet."=「でも、それらからまだ返事は来ていません。」
② "But please reply to this email,"=「でも、このメールには返信して下さい」
"as I would like this one to be prioritized."=「これは優先したいメールなので。」
ご参考に。