Hello,
Check this post and try solution described there https://support.schemaapp.com/support/solutions/articles/33000251608-how-to-add-brand-markup-to-the-woocommerce-plugin#:~:text=Schema%20App,-Welcome&text=Select%20WooCommerce%20%3E%20Products%20%3E%20Attributes.&text=Go%20into%20your%20Product.,name%20of%20the%20associated%20brand. Let me know if that helps.
Regards
