is there anyway to put thousand separator like dot or comma in value field?
If we are talking about static data views - grids, lists, etc. - you can use number formatting. In case of input fields - it is not possible.
in this case is a pivot table.
It technically possible, but current version of component lacks the API to configure it. You can fallback to datatable component - it can use data similar to the pivot, but has a lot wider configuration options.