Hey

Fashion and apparel engineering ( Engineering + Fashion designing ) is a great field to work in. Apart from designing new clothes, Fashion engineers are more exposed to technical aspects of the job.Fashion and apparel engineering covers broad areas like textile manufacturing, fiber specialization, and many other fields. There are a number of career prospects or professional opportunities after completing fashion and apparel engineering like Fashion designers, consultants, portfolio designer. So Yes Fashion engineering is definitely a bigger field of fashion designing.

But if you want to choose between fashion designing and fashion apparel engineering, then Go with your interest, if you are interested in pursuing fashion designing with technology then choose fashion engineering. To know more about it, you can go through this link once -: https://www.shiksha.com/design/fashion-design/articles/fashion-apparel-engineering-scope-career-options-blogId-8063
Hope it helps!