Typically unless the description says, "interface cable included" you have to buy one separately.
If you want the interface cable, go back to Amazon and put into the description "Baofeng (Model Number) interface cable" and the correct one for your radio will pop up.
No worries, you can still program the radio by hand.
Your mission if you chose to accept is put in the following freq.' into your HT:
1) Georgetown 145.310 Mhz,
2) Smyrna 146.655 Mhz,
3) Wilmington 146.730 Mhz,
4) Newark 146.700 Mhz, and
5) Seaford 146.715 Mhz.
Once that is done, then scan those five repeaters to see which one (s) work at your AO.
I forgot which Baofeng you have but if you are having a hard time using the Chinese translated into English directions let me know. I know of a site written by Americans.
Good luck and welcome to the world of ham radio in the 2meter/440 cm bands.