I think there are many other things with a higher priority
I have a work request but it's not anything urgent, so if you have other tasks that are high priority, it's fine if you finish those first.
「優先順位が高いものが他に沢山あると思います。」は英語で「I think there are many other things with a higher priority.」という表現が良いと思います。
優先順位ーPriority
優先順位が高いーHigh priority
沢山ーMany
「仕事の依頼をしたいのですが、それほど急ぎではないので、優先順位が高いものがあれば、それが終わってからでいいです。」には英語で「I have a work request but it's not anything urgent, so if you have other tasks that are high priority, it's fine if you finish those first.」という表現が良いと思います。