You are free to use Odoo for any Academic, Commercial, Developer, Educational, Evaluation, Government, Home, non-Commercial, non-Profit or Personal purpose.

You may not use Odoo Cloud services for storing, displaying, distributing or otherwise processing illegal or harmful content. This includes:

• Illegal Activities: promoting gambling-related sites or services, or child pornography.
• Harmful or Fraudulent Activities: Activities harmful to others, such as promoting fraudulent goods, services, schemes, or promotions (e.g., make-money-fast schemes, ponzi and pyramid schemes, phishing, false advertising, ...), or engaging in other deceptive practices.
• Infringing Content: Content that infringes the intellectual property of others.
• Offensive Content: Content that is defamatory, obscene, abusive, invasive of privacy, or otherwise objectionable, including content that constitutes child pornography, relates to bestiality, or depicts non-consensual sex acts.
• Harmful Content: Malicious and malware content, such as viruses, trojan horses, worms, etc.
• Deceptive Links: Links that deceive users into visiting malicious or dangerous websites, gather affiliate visitors/clicks, or artificially inflate the reputation of other websites.
• Spam Content: Content that is published for "black hat SEO" purposes, using tricks such a link building / link spam, keyword spam, in order to exploit the reputation of Odoo services for promoting third-party content, goods or services.

From odoo.com/acceptable-use