Is it permissible to create a website for music and receive an amount for its management, while donating the remainder, with the intention of benefiting the religion with these funds?

The end does not justify the means, and singing is Islamically forbidden according to the Quran, Sunnah, and the sayings of scholars. It is not permissible to create a website for songs, no matter how profitable it may be, as they are forbidden and hold no blessings. There are many good ways one can benefit Islam and Muslims, such as seeking and teaching knowledge, inviting people to Allah, giving charity, and refraining from harming people.