I got my first credit card two years ago. I've made every payment on time and in full. I've started getting pre-approved loan offers through the mail. They are from legitimate banks. They say it's because of my excellent credit rating. Could I really have established a good credit rating in just two years? BTW, I've never applied for a loan, these are strictly unsolicited loan offers.
Credit card companies get a list of people who at least meet their minimum standard. They have not viewed your report yet and will only do so once you return the application.
To answer your question, your credit is within their range so it is probably pretty good. If you have managed your credit card well for 2 years, it is probably very good. If this is the only credit you have, then your file is very thin. You need other types of loans to build excellent credit. It sounds like you are off to a very good start though.
Getting those offers means nothing. If you actually try to apply for one of those loans, you may find that you don't qualify.
CreditKarma.com offers a free score estimator based on your TransUnion credit report. It's not FICO. But it's kinda, sorta like FICO, give or take 50 points or so. Good enough if you are curious about your score.
A two year good payment history would give you a decent score. But it really depends on how many lines of credit you have. If you just have one credit card, your credit history would still be very limited.