will 2019 window vents fit on the 2020 model
Unlikely, the 2020 Escape is all new, inside and out.
What are you calling a window vent?
wind deflectors for front and back windows
If the vendor doesn’t list their product for the exact year car you own, call the manufacturer on the phone and ask them if they will fit.
As @FoDaddy points out, the 2020 car is all new so the likely answer is no.