Is thier a reason why on a Script (RESTlet) the Approval status on a bill isn't changing status to approved { "approvalstatus": 2} ? We removed all workflows aswell and it seems to be working on REST Web Services

Is very common in NetSuite that some fields are exposed to some APIs and not others. The field ID for SuiteScript (RESTlet) may be simply different and it also could behave differently.

Got it is Thier a list I can look into besides the record browser internally in NS?

Navigate to a record, use something like this: • https://chromewebstore.google.com/detail/netsuite-field-explorer-e/pdmkaejbieljlcemfjpmgifjljhgniij (Disclaimer: I developed this particular extension, there are others available). Search for the words: "approve" or "status". Test with those fields.

my guess is that the workflow is still running on your bill. Check active workflows subtab on the system information tab of the bill