If you are referring to that white fuzzy stuff it appears to be mealy bugs but the quality of the picture is too poor to make a positive ID. On the damaged tomato the severely damaged area is not visible but what little is visable it appears to be caterpillar damage. The discoloration is probably caused by the damage but it could also be sunscald. Use Neem Oil or rubbing alcohol and swab to kill the mealybugs
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