The 25-year-old forward said the chance to play in Europe's top tier competition was the main driving force behind his £60million move from Everton.
"It's a dream isn't it?" Richarlison told the club's website of Champions League football. "I was even commenting with friends that the TV gave us goosebumps, just listening to the theme song.
"Now I can be inside the stadium listening to that music. I always said it was my dream to play in the Champions League and now that dream will come true.
"Maybe I can cry because it will be a special moment to be there playing in the Champions League because I only watched it on TV. Until last year I was there on my sofa in my house watching the Champions League and I said it was my time to play there…
"When the time comes I'll be quite emotional because it's a big competition and all the players want to play there."
Richarlison played a leading role as Everton narrowly avoided relegation from the Premier League last season.
The player scored 10 goals in 30 league appearances, but admitted he was taken aback by the interest from Tottenham.
"I'm very happy for this moment," he said. "When I was in Brazil and the offer from Tottenham came I couldn't believe it. And after I signed my contract even more so because it feels like a dream. When I arrived it gave me a chill in my stomach."
The forward is also relishing the chance to work with the current Tottenham manager. He added: "Antonio Conte is putting together a great team to be able to compete in all competitions.
"I think we'll be very strong in all competitions and we'll fight for titles. The coach will prepare us very well for this because there are many competitions.
"Now we have to be focused as much as possible, so I think we have everything to make great competitions and in the end we have everything to lift a trophy."