OK, so having been in slightly a similar situation, I would advise you go for PSM I and if you are up for it, maybe even PSM II or one of the other certifications offered by Scrum.org.
These are all issued by Scrum.org, an organization founded by Ken Schwaber, who is scrum's co-author.
I passed PSM I by simply reading the Scrum Guide, which is like 16 pages document. For PSM II, I pulled some of my old books and just freshened my memory on the parts that you don't tend to use at work. Do not aim for PSM II without having an excellent knowledge of Nexus or scaled scrum, something I knew about beforehand..
The exams aren't trivial but if you have some experience with Scrum and prepare well, you should pass it.
All Scrum.org certifications are recognized globally, are cheaper than all the other similar certifications and do not require that you attend an expensive course.
A side note: certifications help your CV get noticed but do not guarantee a job. You will still need to be experienced enough to answer non-theory questions.