Unrealized profit is the amount of money you stand to make if you closed a winning trade at that moment.

For example, say you have a long position on bitcoin (you bought bitcoin) at $10,000 with $1000 (you have 0.1 bitcoin), and the price has gone up to $11,000. Your unrealized profit would be $100: ($11,000  - $10,000) * 0.1.

Just remember that profit means nothing until it has been realized, so try not to get to excited by it, and try not to get too depressed when it decreases (because that will happen often).