The search results do not provide specific information about "Doctor Credit" at http://www.doctorcredit.com.br or its LinkedIn page. However, based on typical services offered by similar companies, a company named "Doctor Credit" might focus on credit consulting, financial analysis, and credit repair services. Their target audience could be individuals or businesses seeking to improve their credit scores or manage financial obligations. The unique selling proposition might involve personalized financial guidance and effective credit management strategies. For precise details, visiting the company's website or LinkedIn page would be necessary.