Personally, through my experiences with these airdrops and new coins, it is better for you to sell immediately upon listing because you will get the highest price. After listing, everyone starts selling, so the token price quickly drops.
You can sell immediately at a good price, and when the price drops, you buy a larger quantity, and so on. Upon listing, there is a lot of movement and liquidity that you can benefit from, but after a short period, the token fades and the liquidity drops significantly and begins to decline because most of these tokens are empty and have no real projects.