Do we have support for OData parameters on RESTCONF

Do we have support for OData parameters for RESTCONF URLs
For example $top, $orderby, $filter etc.,
If there is no support for these kinds of parameters, do we have support for similar query parameters in any other manner?

No, OData parameters are not supported; very small subset of their functionality is covered by query parameters. Everything else can be done with the Query API, though with a bit more complex query protocol.

Have a look at the corresponding section in the REST chapter of the ConfD user guide; note that REST is deprecated, but the section applies with only minor changes to RESTCONF too.

… the examples.confd/restconf/query example that comes with ConfD is likely the best place to start.