This is what you need to do for the Fortnite Week 11 challenge to help celebrate Hearts Wild.
The challenges for week 11 are now available and there are seven epic challenges and one legendary challenge. Completing one of the 20,000 XP Epic Challenges award players and the Legendary Challenges has five different phases, with the first phase giving 55,000 XP and 22,000 XP for the extra phases.
The last Epic Challenge of Week 11 is to help celebrate Lovely Hearts Wild. This challenge may seem complicated, but is actually simple and easy to accomplish.

Fortnite – Help celebrate hearty wildlife
All of the epic challenges for week 11 are related to Valentines / Hearts Wild and are pretty easy to accomplish if you know what you’re doing. You will have to complete all other challenges, and then you only need to go to any character on the map. You can find more than 40 different characters to communicate on the whole map. Once you are there, you will be able to communicate with them and it will say, “Give card!” as can be seen in the picture below:

After choosing with your character, you will receive a notification on the left side of the screen indicating that you have completed the challenge. The description will show: ‘Score! And the hearts go wild! Nice work! You will also see that you have awarded the 20,000 XP for completing the challenge.
You can give the card to any character of your choice and each character will say something different. If you give the ticket to Farmer Steel, he will say, “Are you trying to apologize for breaking something?”

If you give the ticket to Sunflower, she will say, “Well, that just puts the biggest sunshine smile on my face!” Beef Boss will say, ‘Give your Tomato Head one of these? Because it’s even sweeter if you did not do it, huh. ‘