In VA, you can bet on the Derby (or any other horse track, including Australian race tracks at midnight, not that I've never done that or anything) via the Fan Duel app. You have to take an extra step to get to the horse racing betting page on FD, but you can use your sportsbook balance to fund the bets. They are offering a $20 free bet on the Derby, which is a nice perk.
Fallica, among others, picks "Just an FYI" (#13) and "Ways and Means" (#11) in today's Oaks (Just an FYI is a beast - bigger than the Derby horses). Will be on Just an FYI. FWIW, Just an FYI and Derby horse (see below) "Just a Touch" were sired by 2018 Triple Crown Winner "Justify".
Fallica, among others, likes "Just a Touch" (#8 in the Derby). Among the longshots that show promise: #7 Honor Marie, #3 Mystik Dan. Fierceness is the favorite; he has by far the best speed figure; if he runs his best race, he will win, but Fierceness is not consistent, and probably not worth the short price in such a big field.