1. It's built from your Profit and Loss, not typed in. At the start of a new fiscal year, QuickBooks rolls the prior year's net income (or loss) into Retained Earnings automatically. There's no closing entry you'll find sitting in a register, it's a calculation the Balance Sheet performs behind the scenes.
2. It accumulates, it doesn't reset. Each year's net income adds to whatever was already there. A business five years in has a Retained Earnings balance reflecting all five years combined, not just the most recent one.
3. Where to actually see it. Run a Balance Sheet report and look in the Equity section. Trying to click into it from the Chart of Accounts behaves differently from a bank or credit card account, because there's no register of individual transactions to open.
4. It's usually separate from owner draws or distributions. In most small business setups, money an owner takes out is tracked in its own equity account (Owner's Draw, for instance), not subtracted directly from Retained Earnings automatically. Whether that's how your business should be structured is a question for your accountant, since it depends on entity type.
5. You rarely touch it directly, and when you do, it's deliberate. Correcting a prior-year error after the books are already closed, or adjusting an opening balance brought over from another system, sometimes requires a direct journal entry against Retained Earnings. That's a decision to make with an accountant, since it can affect prior-year reports and filings that are supposed to be locked.