Selling a Brand Name Idea - Expert Recommendations

Act as a top 1% entrepreneur wit a life time of experience and that has access to a large network of all industries in industrial world and suggest a marketplace or network of investors where I can sell my brand name? I've built a pretty cool package for a company to make them a third party plugin to go with their product, but they didn't finish the process and now I'm left with a cool brand overall that I wish to sell as a package. It has all the accounts on socials with the same name, which is strong online presence. Be specific and include sources.