is there any themed park based on this?
Yes, it appears at the Mall of America's Nickelodeon theme park which features a SpongeBob-themed Gerstlauer Euro-Fighter custom roller coaster.
SpongeBob SquarePants
SpongeBob SquarePants appears at the Mall of America's Nickelodeon theme park re-branded from the Mall of America's Park at MOA, formerly Camp Snoopy, to Nickelodeon Universe in the Minneapolis-St. Paul suburb of Bloomington, Minnesota. The new theme park features a SpongeBob-themed Gerstlauer Euro-Fighter custom roller coaster. 
when did spongebob start working at the krusty krab After he fulfils the task given by Mr. Krabs. what is referred as help wanted? It is the pilot episode of the American animated television series "SpongeBob SquarePants". when was it aired? May 1, 1999 who did its background score? Tiny Tim who is the creator of the mentioned series? Stephen Hillenburg who are its characters? SpongeBob SquarePants, snail Gary, Patrick Star, Mr.Krabs, to name some. who was cast for this first character? Tom Kenny voices SpongeBob who were the other actors to lend their voice? Tom Kenny, Bill Fagerbakke, Rodger Bumpass, Clancy Brown, Mr. Lawrence, Jill Talley, Carolyn Lawrence, Mary Jo Catlett, and Lori Alan.
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SpongeBob SquarePants [SEP] Theme park rides
SpongeBob SquarePants appears at the Mall of America's Nickelodeon theme park re-branded from the Mall of America's Park at MOA, formerly Camp Snoopy, to Nickelodeon Universe in the Minneapolis-St. Paul suburb of Bloomington, Minnesota. The new theme park features a SpongeBob-themed Gerstlauer Euro-Fighter custom roller coaster. The SpongeBob SquarePants Rock Bottom Plunge, which opened March 15, 2008, has replaced the Mystery Mine Ride and Olde Time Photo store at the west end of the theme park. On May 23, 2015, an interactive 3D show titled "SpongeBob SubPants Adventure" opened in Texas at Moody Gardens. According to Moody Gardens President and CEO John Zendt, "Visitors will be able to interact with the Nickelodeon characters on a digital stage as they have never been able to do before."