If you want to increase the value of a token, you need to list the token in major exchanges and not in small exchanges because that can get more attention from the traders so they will see if that token has a value more than the other tokens.
Listing on Coingecko or CMC is only for tracking the history from the tokens or coins, so that will not increase the value of a token but I may be wrong.
We do not know how long the price goes up after being listed on the major exchanges, and it could be days or months or even years for the tokens to increase.
But if the token can attract attention from traders, the price can increase in a short time and will stay at that current price or will be back to the low price.