Stay away from projects with insanely high APY, 100,000% to 500,000% APY, you knew what I'm talking about, Titano, Safuu and others, invest but learn to back your initial investment first, all these defi projects are practising ponzinomic scheme. The latest is Safutinano, just know what you are doing.
If you did some research before investing, you can distinguish which projects are scam and which are not.
If you know how to be realistic and you are knowledgeable, you will know just by the APY alone if the project is a legit or a fake one.
Its pretty obvious that the APY that OP said is very high that the project can't sustain to give their investors that high APY. Just imagine you will put 1$ in that project and after a year it will be $1000 or $5000. Where will they get that? That question alone is enough to answer the question "Is it legit or not?"