For any object in an Org Model, open the tree and select a field. Select the "ACCESS" tab on the right panel. Then click "Fetch field access data" to get the data.
You will get a notification when access details have been updated. You will see what profiles and permission sets (and how many) are associated with a given field.
The hyperlink icons will open the profile pages inside Salesforce Setup.
You will also see how many users have access to this field. You can see the whole list of users with access to this field together with their access type by clicking on "Show users with access".