Adobe flash player

I'm guessing that we're talking about a video visitation service provided by an assisted living facility or something like that.

Any Windows 10 machine is going to let you install Flash and (assuming it's a laptop with a camera and microphone built-in), should be good to go for video conferencing with minimal fuss.  The more important issue is going to be about having a good internet connection, with either a wired or rock-solid wireless connection in your house.

The issue that's being described above, is that Flash is going away, soon.  The facility will need to either update or replace their video visitation solution before December.  You should ask them about what their plans are.  

The nice thing is that today in 2020, there are native HTML/JavaScript solutions for quality video conferencing.  You can totally build a good conferencing solution that just requires a normal web browser to use.  No special software required.  It's up to the facility to choose a solution that makes that possible, but it's definitely available. 

If you want, you can point them to this, which describes why Flash is going away, and lays out the timeline: 

https://theblog.adobe.com/adobe-flash-update/

I'm not sure exactly what you're asking, however, As @Test_Screen_Name indicated, Flash Player is being end-of-lifed at the end of 2020.  Whomever manages the service you're using will need to migrate to some other platfrom.

In the interim, Flash Player is supported on Windows10.  Microsoft embeds Flash Player in Internet Explorer and Edge browsers.  Google also embeds Flash Player in Chrome browser.  If you use one of these browsers there is no need to install Flash Player separately.  Both do block Flash by default, so you'll need to enable it to view Flash content.  For information on this, see https://helpx.adobe.com/flash-player.html for links to enable Flash in the various supported browsers.

Flash Player is closing down in less than a year. Your priority, if you are planning to invest in a service for the future, is to find one that does not need it. This could be a service with no future, many will just stop working and die.