@OP, during bull market, you can not actually say for sure which token will pump because luckily for any random token, they will pump and so many of them will also dumb.
If you are new to crypto, you can start your investment with Bitcoin first and with time, you can make good choice of selecting other token to risk your money on.
During a bull market, many cryptos are in fact pumping already actually but for those that aren't yet, they might still have a good chance to go with the flow, especially if they have some unique or interesting traits. If in case they will dump, that only means that the bull market is starting to wore off. Whether we are new or old in investing, BTC will always be the default good choice, though yeah that it's better to gain experience on it first before adding more in our bag, especially the risky ones like many of the tokens.
Someone might tell you to buy a token but there high chance that the token might not get pumped . So, it's left for you to do a proper research on any token you like, before investing on it.
Or they can pump but it is just that we are only late for the party because usually those who do this are only after the liquidity. But yeah, our likings must come within us and not from others but if we do, then we must always double-check things for us to not get fooled.