Those little bright dots are fireflies. If you were to let your image render out past 10,000 samples those little dots would all add up to a highlight in your image. They are coming from very bright, very small lights or very bright, very small bright spots in your HDRI, or mistakes in your shaders that are reflecting light back out as these hot-spots. You can also get the effect if you take a ball and crank up it's ambience and place it in a prop like a bowl where the inside edges of the bowl have to diffuse and reflect the light.

What can you do?

1. use an HDRI with a lower dynamic range. This will make all the shadows and highlights soft and get rid of the fireflies.
2. make sure you have clamping set. Start around default 10 if this is already set then look elsewhere to get rid of the fireflies.
3. Use the "BACKGROUND" to light your scene with your HDRI instead of a dome or sphere. The background lighting works with much less noise and errors than using an ambient dome. The added benefit is that the background will also cast proper highlights and shadows.
4. fix your shaders: use proper PBR legal shaders that wont bork your scene. If you are running Poser 11 use my super shader that is free right here at Renderosity. It does proper metals and even has all the correct colors for the metal you want. If you are running Poser 12 then use the Principled BSDF node for metals that wont freak out your scene. examples of using the background as a light source.

here is one using my shader for the metallic catsuit.

W10, Ryzen 5 1600x, 16Gb,RTX2060Super+GTX980, PP11, 11.3.740