The first two are OK (casual) and mean near enough the same. "rubbishly" is not really a proper word. It could possibly be used as a made-up adverb in a context such as "that went rubbishly".
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Mr. TomThanks, GPY and MM....but the problem is, all my dictionaries and online dictionaries treat rubbishly as an adjective. One of my dictionaries compares its ly with the ly in the adjective miserly.Could you please check what Merriam-Webster says about this word?