HOW TO RETRIEVE CHAT DISCUSSION

As far as I know, if you are didn't record the Meeting, and you didn't had enabled the Meeting Settings "Enable continuous meeting chat", after the Meeting the chat goes away along with the meeting. Below a screenshot of what you need to activate in your Settings > Meetings > Schedule Meetings

More details in this Zoom Document:

https://support.zoom.us/hc/en-us/articles/9862812136205-Creating-and-using-continuous-meeting-chat

Is there a way to retrieve a copy of the zoom meeting after it ended