How do i know if im bipolar and what would that mean for me?

I think you would know it if you had it. You'd swing from depression to mania, where in mania you'd typically sleep very little, had a lot of energy, feel bold and on the top of the world, like you could do anything, you'd be more likely to spend large sums of money and engage in risky behaviour without realizing it's unwise and dangerous, in extreme case you might have psychosis and hallucinations, like believing you're a God. Then you'd crash and start feeling depressive, no energy, feeling weak, thinking you're a nobody, your body might hurt, everything would be overwhelming, in extreme case you might show physical symptoms like rash or other health issues.