The Surf Strider Bundle in Fortnite is attainable for Intel users and it's completely free. This has become somewhat of a habit by Epic Games as the developer released multiple Marvel-themed skin bundles for winners of certain cups. Then afterward, players can purchase the skin bundles in the item store if they were unsuccessful in the specific cups. The latest one was Venom, but the Surf Strider bundle is a bit different.
Instead of a competitive event, players need to use Intel.
Surf Strider Bundle Fortnite: How to Earn the Bundle for Free
To unlock the bundle, head to this website, create an account and link it to your Epic Games account. Sadly, you can't fake the process and try to get one without an Intel processor. As the website will run a test to see if you are eligible (using an Intel processor). If so, they will reward that account with the skin bundle.