How many jobs should you apply for?
You’ll hate this answer, but here it goes: it depends. If you can find a well-paying, full-time job, then you only need one job.
Of course, you won’t necessarily get the first job you apply for, so yours is a reasonable question.
You should apply for as many jobs as you can handle the full interview and follow-up process. If you apply to more jobs than you can keep track of, you might drop the ball during the hiring process and lose an opportunity.
This where a staffing agency can be helpful, sort of a one-shop stop for many job opportunities. You still have to find the right agency for the types of positions you’re seeking, but when you do, they can handle presenting you to a number of employers at the same time, then coordinate interview scheduling on your behalf.