need some advice on whether to schedule my exam soon

https://preview.redd.it/pohbh241a95g1.png?width=548&format=png&auto=webp&s=46f3bf2d7b9ccb5754645997eb1434b06785098c

I'm extremely bad at math. Never finished high school algebra 1 before dropping out. I'm not very confident with calculator skills. I believe my understanding of it is only just getting there.

If I bunker down the next couple of days studying calculator problems.. do any of you GED-havers / teachers recommend I schedule it within in the next ~3 days?