Short answer: At a 1% fee on each buy and sell, a round trip costs about 2%, and the token must rise roughly 2.03% just for you to get back your starting amount. Slippage, price impact and network fees raise that hurdle further, so fee-heavy scalping needs a large edge.
The arithmetic of a round trip
Say you buy 100 of a token with a 1% fee. Only 99 ends up invested. If you later sell, another 1% is taken from the proceeds. To walk away with 100 again, the 99 you invested has to grow to about 101.01 before the sell fee, which is a price increase of roughly 2.03%.
That number is the minimum, not the typical case. It assumes you are filled exactly at the quoted price and that nothing else costs money.
What stacks on top
On-chain trades also pay network fees, and on thin liquidity your own order moves the price against you. Slippage tolerance settings make this worse when they are loose, because a bot will accept a worse fill rather than fail the trade.
For small, illiquid tokens the combined cost of fees, slippage and price impact can be several times the headline fee.
What it means for strategy
The higher the fee hurdle, the larger the average move your strategy needs, and the fewer trades it can afford. A strategy that trades frequently for small gains is the most exposed. Before you automate anything, compute your expected gain per trade and subtract the full round-trip cost.
If the number is not clearly positive after costs, the fee schedule has already decided the outcome.