Im planning 2 open a online business to sell books 365 things 2 do with paper and cardboard for the muslim kids, so that parents can spend time with them by doing different activities daily instead of giving them phone. Will expand more products in the future in Sha Allah. Will it be halal 2 earn $?

Ustadh AbdulAziz al-Haqqan

Yes, the earning follows what you sell, so if the books are beneficial and contain nothing forbidden the money is halal.