when do we light candles when making shabbos early?

ב"ה Shalom, When you make Shabbat early, candles cannot be lit until a time called "Plag Hamincha", which is about one hour and a quarter before sunset. This time is determined according to where you are on the globe. On our website, you can look at the candle lighting times of major cities on the globe, or the website https://www.myzmanim.com/ which will give you candle lighting times and other halachic times for anywhere in the world. All the best