Hey,
If the soil is dry and the plant is wilting, most likely as soon as watered it should perk up and look healthy again within 15 minutes, if not instantly.
If the plant does not perk up, then that's when there's a problem. Either the plant has been too dry and is dying. Or there may be an issue with the roots. Sometimes keeping some kelp extract around is a good idea because it can help with drought, and many other plant abuses...a general plant tonic. It's also good to use some sort of silica with a grow as that helps to make stronger more resilient plants also.👍