How to sync my windows outlook 365 calendar with calendly ?

Hi ​@Luís67347 - Thanks for reaching out!

Since you’re using Outlook Desktop, you can follow the steps below to get the download link for the Plug-in!
 

1. While logged into your Calendly account, click ‘chat with us’ to start a conversation with Cal.
2. Let Cal know that you “need the outlook plug in install link”.
3. Select “Downloading” from the prompts that appear.
4. Answer a couple of quick question prompts that will help Cal verify that you meet the requirements to use the Plug-In.
5. If you meet the requirements, you will then be provided with the link to a Help Center article containing the installation link and instructions.

You can also follow this guide for the install steps: How to install the Outlook plug-in

I have the free edition of calendly. I can’t find the chat with us.

Understood - In this case, go ahead and login to your account and use this link: https://help.calendly.com/hc/en-us/requests/new

This will open a chat with the bot who can take you through the steps