Muslims are told to believe in every prophet Allah sent, and to make no distinction between them in that belief. Rejecting Moses or Jesus would take a person outside Islam.
Al 'Imran 3:84
Listen on Quran.comقُلْ ءَامَنَّا بِٱللَّهِ وَمَآ أُنزِلَ عَلَيْنَا وَمَآ أُنزِلَ عَلَىٰٓ إِبْرَٰهِيمَ وَإِسْمَـٰعِيلَ وَإِسْحَـٰقَ وَيَعْقُوبَ وَٱلْأَسْبَاطِ وَمَآ أُوتِىَ مُوسَىٰ وَعِيسَىٰ وَٱلنَّبِيُّونَ مِن رَّبِّهِمْ لَا نُفَرِّقُ بَيْنَ أَحَدٍ مِّنْهُمْ وَنَحْنُ لَهُۥ مُسْلِمُونَ
3:84Say, “We believe in Allah and in what has been revealed to us and in what was revealed to Ibrāhīm, Ismā‘īl, IsHāq , Ya‘qūb and the descendants, and in what has been given to Mūsā, ‘Īsā and the prophets, from their Lord: We do not differentiate between any of them; and to Him we submit ourselves.”
English translation: Mufti Muhammad Taqi Usmani, The Meanings of the Noble Qur'an, via Quran.com. Arabic: Uthmani script.
Did you know Muslims are required to believe in Moses and Jesus?