Final stage - Matterhorn Stadium - Challenge: Perform a single Trick worth more than 2500 by the Trick Token

Edit: One thing worth mentioning, brought up in the comments, it's worth more if it's the first time you've done the trick. The more you perform a trick, the smaller the score.

This is not too difficult to do, main thing is to select a trick that gains more points such as the Heartbreaker (↑ ↓ ▢) which I used. Some other high scoring tricks -

Mamba - ↑ ↑ ▢
The Fray - ↓ ↓ ▢
Backbreaker - ↓ ↑ ▢

Wallride up the turbo boost, do the grab you're comfortable with along with flipping (R1) and pushing the analog stick diagonally in any direction that suits you.

Hope this helped