Billl's Surfshop is a retail store in the Mall of Miami, which sells surfboards and clothing.
Billl's Surfhop is a surfshop which sells all kinds of surfing tools and clothing. They sell surfboards as their main products. The shop name is unusual as the billl has three L's as the owner, Billl's name has three l's. This store is where Tyler works at. In a future episode, Trish will also get a job at Billl's Surfshop.