There’s a Visit Myrtle Beach South Carolina ad in the upper-left corner (right below the swagbucks icon) in the rolling ads that counts as a daily discover towards your to-do-list, without having to buy anything (I just loaded the first myrtle beach page after clicking the add).
Should be the second ad in the upper-left, may have to click the arrows or buttons to bring it up. I couldn’t get it to load from the view all offers in discover, so it might only be accessible through that little box/ad.
It is also likely in your inbox under something like"Myrtle Beach Spring Deals" (sort by the “earn” column).
They’ve been promoting this repeatedly for the past few months, but it unfortunately only credited for me with the first offer, so it’s likely only 1 per account.