I don't know if this project tricked me or not.,but i buy from each coin the equivalent of $500

the current total estimated selling value is $20K but I can't sell it

I've come to realize it's usually the same near experience every newbie has. As newbies we tend to believe we can do it on our own and put our little knowledge to test. However, cryptos don't work that way. Our little knowledge can't carry us that far without first passing us through such an experience as you painted here. To succeed in cryptos, one needs the shoulders of giants to see far ahead. I passed through this same experience of having tokens with bloated princes on scan but couldn't sell them that price in reality. I think those tokens later became worthless. This is why researching before investing is important. Don't invest before researching. Doing so is like putting the cart before the horse.
very nicely stated - that is why people have mentors and guide when they are swimming in new water.
HArd work and learning never go wasted. So work hard - be consistent and keep leaning - seek help where needed, its not a problem when you are in trouble you always turn to someone for the help.