how to sync zoom meetings bidirectionally with salesforce. I followed all the instructions in both the documents but still not syncing

Make sure that you have the correct permissions in both Zoom and Salesforce.

Make sure that the Zoom and Salesforce users are mapped correctly.

Make sure that the Zoom meeting types are mapped correctly to Salesforce event types.

Check the Zoom and SF logs for any errors. The logs may provide you with clues about why the syncing is not working properly.

Try restarting both Zoom and SF. This can sometimes resolve minor issues.