Adobe Stock ‘s giveaway program rewards successful contributors and encourages you to take your work to the next level using Adobe’s Creative Cloud apps. You don’t have to apply to benefit from this offer. We will notify you if you qualify by sending a redemption code for Creative Cloud via email. There are two different software plans you can be awarded:

• To receive a 1- year subscription to Adobe Creative Cloud Photography plan, be among the first 20,000 Adobe Stock Contributors to upload at least 300 accepted assets or earn $500 (USD) in royalties for the period Jan 1-Dec 31, 2018. To qualify, you must maintain at least a 50% acceptance rate of your submitted content.
• To receive a 1- year subscription to Adobe Creative Cloud All Apps plan, be among the first 2,000 Adobe Stock Contributors to upload at least 300 accepted video assets or earn $500 (USD) in royalties from videos for the period Jan 1- Dec 31, 2018. To qualify, you must maintain at least a 50% acceptance rate of your submitted content.

https://helpx.adobe.com/stock/contributor/help/creative-cloud-giveaway-FAQ.html