There are many reasons why a recruiter may not reach out right away.
You can see which recruiters have viewed your profile here:
Here are a few articles to help understand why recruiters may not be reaching out immediately after viewing your resume:
Your Job Application’s Journey
What’s Taking Recruiters So Long?
This is why hiring managers aren’t getting back to you — and what you can do about it
Here are a few advice articles on how to avoid common mistakes:
6 reasons recruiters say they’ll toss your resume in the trash
7 reasons from recruiters why you didn’t get the job
Is it true that recruiters reject a resume in six seconds?
Additionally, here is an article to help you improve your communication with recruiters:
10 questions to ask a recruiter (and 1 to avoid)
Best of luck in your search!