How do I buy Dapps?

Hello there, I'm curious about purchasing Dapps. Could you please elaborate on the process? What are the steps I need to take to acquire them? Are there any specific platforms or exchanges that cater to Dapps? Additionally, what factors should I consider when making a purchase decision, such as fees, security, and liquidity? Any insights or tips would be greatly appreciated. Thank you in advance for your guidance.