Calendar View in both SharePoint and Outlook

OneHundredthProfile There is no SharePoint out of the box calendar web part available in SharePoint online modern experience.

You can create a calendar view in SharePoint online lists but unfortunately you cannot sync it with the Outlook calendar. 

So, If you are looking for SharePoint out of the box options, you will have to use the classic experience calendar currently. You can also create the calendar list from SharePoint UI. Check my answer here for detailed steps: Issue with adding app option 

Else, you will have to use the custom solutions like:

1. Create a custom SPFx web part - you can use Microsoft Graph API calls to read the outlook data in SPFx. Check Showing a calendar as a group calendar instead of events web part and Outlook to SharePoint 
2. Use Power automate to update outlook calendar whenever there it item created/updated/deleted in SharePoint list
3. Create Canvas Power Apps, add SharePoint and Outlook connector to show events or add/update/deleted events

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