Q.Hi! My lemon cypress is in a really bad shape. Its still green, but 100% of the needles are dry. I dont overwater it, try to give
it as much sun as I can. I wanna know, if its all dry, should i cut it so it grows again? Like is it dead or it might come back? I t does not seem like its getting better from week to week, its getting worse. Anything I can do to revive it?

No don't cut it back hard as long as it's still green, conifers do not usually respond well to heavy pruning.
Are you watering adequately? https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-moisture-in-plants.htm
Is it too warm indoors. They prefer low 60s F.
https://www.gardeningknowhow.com/ornamental/trees/cypress/lemon-cypress-care.htm