It's a good business but you should also like what you do. Not just you'll enter because somebody said that it's profitable but you have zero knowledge of it. It's better to not pursue such business or investment that you don't know about. If OP is in doubt of investing in bitcoin, he should think of it because it will always be profitable if you're not a short term minded person.
Why would op doubt in investing Bitcoin?. After all, BNB and other crypto are made because of Bitcoin so I would say Bitcoin should be the first choice if doubting to invest in other crypto. Even if you don't know about it but still you can invest in it after you made some research if it is worth to invest or not. Research will help you determine if it is a scam or not except for new projects that the chance of it being a scam project is very high.