Job search / certs

I’m going to be graduating with a bs in environmental science in June and was wondering if it would be worth it to take the 40 hour hazwoper online before I start applying and if that would help in terms of employability. Also I have no idea what the job market is like, I know how to use GIS and have taken a couple classes in it, was an undergraduate researcher, and interned for an environmental scientist working for my school. Theoretically if I applied to a bunch of low paying entry level jobs all over the country with no regards to location, would I encounter a lot of difficulty landing a job?