phone not opening just vibration when start button?

@fadymohamed trying to dry it, is just not enough. You do have to treat it as any other water damaged phone.

For now, stop continuing to try to charge, sync or otherwise use your phone. This potentially can make a bad situation worse.This may further damage your phone.

The next thing to do is to clean it. Since iFixit does not yet have a specific guide for this, use something like this video It'll work for your phone as well. Remove the main board and the charging board. You will have to remove all the EMI shields off those boards. If you do not remove the shields, you are not cleaning the board.

Take a look at all connectors as well as cable ends. Look for major corrosion, evaluate the pins in the connectors etc,. Once you got any gross contamination cleaned, use 90%+ isopropyl alcohol and clean your parts some more. For a proper cleaning, use this guide. It was written for an Apple iPhone 3G but all the steps are still pertinent to your phone as well. I can not stress the importance of a good cleaning enough, so do it over and over while replacing the alcohol after each cleaning. While you clean your boards, check for any obvious damage, like burned or missing components etc. The importance here is the cleaning.

When it is properly cleaned, replace the battery. This is a must and not an option. It will fail if you do not take care of it now. All these steps are to avoid delayed failure caused by corrosion. Best thing to do would be to clean it with an ultrasonic cleaner, but if you do not have access to one, this will at least help. Once all this is done, reassemble your phone and reevaluate. Until it is cleaned, everything will only be a guess. Based on this just vibration when start It is possible that you have a bad display assembly. Use this guide Samsung Galaxy A52s Screen replacement to replace the screen.Replacing the display assembly may fix it. Even with all this, water damage has only a small chance to be fully repaired, but at least you can give it a try.