There are plenty of RP hotspots on both NA-PC and EU-PC. But due to the existence of shards, you may find yourself in a different phase than most roleplayers, and so you will not see them. The best way to work around this is to join a large roleplay community guild.
The best place to start is the website of TESO-RP, which is really the main forum for us roleplayers. Some faction-specific communities also have their own websites. For example, on the EU-PC megaserver you should check Stormhaven RP in the Daggerfall Covenant and Ebonheart RP in the Ebonheart Pact.