Thank you for the answer.
A follow up question: is there a way to install apks on a pico, other than manually copying them? Also, any guidelines on which apk is likely to work? I installed a calculator and an email program that worked, but a few others failed, either refusing to install or refusing to launch.
The interest for me to install the play store was to have a way to install apks that would ultimately work. What I first did was to backup an apk from my phone and copy it to the pico for installation, but my phone is Android 10 (API 30) and the pico is Android 8.1 (API 27), so I guess if an apk is minAPI>27, it will refuse to install. But, is there any other requirement on apks that will install and run correctly?
Edit - Asked follow up question. Sorry for the repeat.