How do I connect this electric motor
It looks like a motor designed to run at 220V / 50Hz, which is the common standard single-phase voltage on 5 continents.  If you want to run it in North America, you'll want to get a VFD.  

The spin speed is "nominal" 1450 RPM, which is dead-nuts correct for a 4-pole motor.  

You'll need to pay close attention to the "KW" or "KVA" marking in the upper left of the nameplate, which is obscured in your photo.  A standard Euro socket is only good for about 3 KVA; if the motor needs more, you'll need to provision a special circuit just for it.