Step 1- First, click the apple icon on top left corner > Select System Preferences... from the menu. Then click Security & Privacy.

Step 2 - Click Privacy tab.

Step 3 -  Click Camera on  the left-hand column, then tick the box next to Google Chrome.

Step 4 - Click Microphone on the left-hand column, then tick the box next to Google Chrome.

Step 5- Please go to screen recording then click on the "click the lock to make changes "enter your user name and password then check the box in front of the google chrome.

Note: If you don't see Camera or Google Chrome option, please update your MacOS to the latest version (Click Apple Icon > About This Mac > Software Update...) and update your Chrome browser to the latest version as well.