I have a 500.00 training budget; what can i spend it on to upgrade my credentials and education to find a good job?

looking for work now, but also have some money to spend on certifications. what can i get to maximize my employability and find the best paying job possible?

i have only my high school diploma right now, and also some experience driving a forklift (our licensing system here is weird tho so i dont need one), and my security licence

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