Had sex wover a year ago and was wondering if herpes can show up that late? had a single tiny pimple on scrotum kinda looked like a tiny pimple. i popped it and blood came out. could herpes take over a year to show signs?

Yes it can.

Herpes is a viral infection that can be passed sexually or through sharing items (i.e. straws, cups). One can be a carrier and never have an outbreak. Usually it can be contracted when a partner has active sores. A breakout is usually painful and in the mouth or genitals. More information: https://www.cdc.gov/std/herpes/stdfact-herpes.htm