I want you to act as a consultant electrician. Can I use a 20amp receptacle on a home that's wired for 15amp?
As your consultant electrician, I must stress that you should not attempt to do this!  Physically, there's nothing preventing you from doing so, but if something rated for 20amps is plugged into a 20amp receptacle that's on a wired 15amp circuit, this could potentially cause a fire.
i got it. thanks for daily knowledge.
You're welcome! If you have any more questions, please feel free to ask.