Hi there @Salesops,
Welcome to the Community! 
Before we dig deeper into this, could you please send a screenshot of the CONFIGURE section of the HubSpot action step?
Please don't include personal information in the screenshot, or be sure blur out any personal information.
Thanks!
Hi @Salesops,
Welcome to the Community.
To troubleshoot the issue of mapping Tawk.to data to HubSpot in Zapier, first review the field mapping to ensure the phone number field is correctly linked. Verify the configuration of Tawk. to's phone number field to confirm it is correctly set up. Use Zapier's "Test trigger" feature to check if data is being captured accurately and inspect sample data to validate that the phone number appears as expected. Reviewing the Zap History can help identify mapping errors. After making necessary adjustments, update the Zap and re-test to confirm the issue is resolved.
Following these steps, you should be able to identify and fix the mapping issue between Tawk.to and HubSpot. If you have any further questions or need additional help, feel free to ask.