Login-PowerBI | Out-Null

$workspaceId = '<Insert Workspace ID>'

$datasetId = Get-PowerBIDataset -WorkspaceId $workspaceId `
    | Where{$_.Name -match "AdventureWorks"} `
    | Select-Object -ExpandProperty Id -First 1 `
    | ForEach-Object {$_.Guid}

Invoke-PowerBIRestMethod -Url "groups/$workspaceId/datasets/$datasetId" `
    -Method Patch -Body '{ "queryScaleOutSettings": { "maxReadOnlyReplicas": 0 }}'

$response = Invoke-PowerBIRestMethod -Url "groups/$workspaceId/datasets/$datasetId" -Method Get | ConvertFrom-Json

$response.queryScaleOutSettings | Format-List 

Invoke-PowerBIRestMethod -Url "groups/$workspaceId/datasets/$datasetId/queryScaleOut/syncStatus" -Method Get | ConvertFrom-Json | Format-List