Leave without pay not display in salary register

hai sir,
In salary register report cannot display leave without pay.
as i am a beginner what are steps to create salary structure.

Leave without pay in salary register is fetched from salary slips, before creating salary slip you need to make sure leave type is set to be leave without pay and assign it to your employee.
Docs and videos are available for understanding salary structure, search it using any search engine with “ERPNext” at the end before asking it on discuss. For now, this might guide you https://erpnext.com/docs/user/manual/en/human-resources/payroll-setup.