which is the most scoping career in both of them digital marketing and graphic design?
Both careers are good enough. In fact, Digital Marketing requires Graphic Design to highlight your marketing plans and strategies. In Digital Marketing you need innovative ideas and in Graphic Design you need creative skills. You can choose any of these.
Some of the skills required for the Digital Marketing Manager are Social Media Marketing, Search Engine Marketing (SEM), Search Engine Optimization (SEO) and Google Analytics (Web Analytics).
The skills required for the graphic designer are excellent IT skills, especially with photo editing and design software. Exceptional creativity and innovation. Excellent time management and organizational skills.
The salary for these two careers has a median salary range of 10 to 15 lakhs.
I hope this answer helps. All the very best for your future endeavors!