While there is no official "randomizer" button within the app, you can discover new VSCO profiles through several exploration tools and curated feeds. Official Ways to Discover Random Profiles
Any external website or app claiming to offer a “VSCO random profile viewer” is operating outside VSCO’s official API (Application Programming Interface). These services cannot access data that VSCO itself does not collect or provide. In reality, these tools are almost always: vsco random profile viewer