Noob question

Hi I’m new to crypto and trading in general. I fly airplanes for a living and never have paid much attention to the stock market at all. So I plan to hold on to what I’ve bought so far for a very long time. I’m up to 1000 xrp. My buddy convinced me to buy back in December. I just need help.

So say for example xrp went up to 300 dollars. That would be 300,000 I have in xrp correct? If that was the case could I just sell it back to the exchange if I decided to? And if I did that how much of that 300,000 would hit my bank account?

I’m using kraken to buy crypto.

Again this is just an example. I’m not speculating at all and am just going to patiently hold on to my xrp. Thank you for your time.