There is no required amount
Some people masturbate often, some occasionally, and some never. Frequency can change with puberty, stress, boredom, relationships, privacy, medication, culture, and personal values.
It does not diagnose orientation or gender identity. It does not mean someone is ready for partnered sex. An orgasm is a body response, not a moral grade.
You can hold personal or religious values while still using accurate health information. Shame is not necessary for making choices that fit your values.