Welcome. My name is ***** ***** would be glad to assist.
Unfortunately there are no resets on the fixture or lamp.
What has taken place, is the ballast has failed.
The ballast is the square or rectangular item inside the fixture that wires to the house wiring and then to the lamp socket.
It will have 2 wires off one end and 4 off the other end.
The bulb has a gas inside and the ballast is what fires off the gas to get the illumination of the bulb.
Same as for fluorescent lighting in a commercial building, the long 4 ft and 8 ft tube bulbs you see.
It will need replacing with one identical , using the manufacturer name and model which is printed on the ballast to be sure of a quick, no wiring change fit.
Not real hard to install, up to each individual of what they feel their capabilities are with electrical items..
Let me know anything further that may be needed.