who is the main protagoist here?
Prince Hal.
Henry IV, Part 2
s focus is on Prince Hal's journey toward kingship, and his ultimate rejection of Falstaff. 
what would 30 pieces of silver be worth today Between $185 and $216 . what does it refers to actually? It was the price for which Judas Iscariot betrayed Jesus. how is it referred in literature? The phrase "30 pieces of silver" is used more generally to describe a price at which people sell out. is it in use in modern times? Yes, in works like "Crime and Punishment", "Henry IV, Part 2",and  "Treasure Trove". is this second one a drama or novel? A drama. who wrote it? William Shakespeare.
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Henry IV, Part 2 [SEP] Synopsis
The play picks up where "Henry IV, Part 1" left off. Its focus is on Prince Hal's journey toward kingship, and his ultimate rejection of Falstaff. However, unlike "Part One", Hal's and Falstaff's stories are almost entirely separate, as the two characters meet only twice and very briefly. The tone of much of the play is elegiac, focusing on Falstaff's age and his closeness to death, which parallels that of the increasingly sick king. Falstaff is still drinking and engaging in petty criminality in the London underworld. He first appears followed by a new character, a young page whom Prince Hal has assigned him as a joke.