As salamu aleykum I wanna do a nikah in sha Allah the sister did convert to Islam 1 month ago. There is no family member that is a Muslim but I have to find a vali i can’t solve this problem maybe you can help me with this problem .

Marriage is not valid without a wali. Her non Muslim father cannot be her wali. For a sister who has no Muslim male relative, her wali is the Muslim authority. So a Muslim judge where one is available, and if that is not available, then she should go to the nearest official Islamic center and they can take care of it in shaa Allah.