Without investing anything in it? No. You'll either need a start capital or you'll need time, and skills. You aren't going to get anything that's worth anything in this world for free. At least, not a currency, maybe some old furniture.
If you want to mine, you need money to invest. If you want to have a job, you'll need to invest your time, and whatever skills might be necessary. If you want to earn Bitcoin passively, then you either mine or you create something which can earn you it passively. None of that comes free.
Most users invest a small amount of money, and benefit from it if Bitcoin goes up. However, a lot of users here have invested their time in building up a reputation, and either building a service or advertising. Other than that, the options are limited, but they all require time or money.
While it is generally true that most valuable outcomes require some form of investment, there are a few exceptions to consider. In certain cases, you may be able to acquire free resources or opportunities that hold value. For instance, you might come across free educational materials or online courses that enhance your skills without any monetary investment. Additionally, you could participate in open-source projects or volunteer work that provide valuable experiences and connections. However, it's important to note that these opportunities often require an investment of time and effort. Ultimately, while obtaining something truly valuable without any investment is rare, exploring no-cost avenues and leveraging your existing resources can still yield meaningful results.