Hi @yolande ,
As you know water and electronics and electricity are not a good mix.
''The impurities in the water causes corrosion and provides circuit paths for the electricity which were not in the phone's operating design and could damage the components.''
''First '''do not turn on your phone''' and then you need to with the phone turned off, '''remove the battery as soon as possible''' from the phone'' to minimize further damage.
Then you need to dis-assemble the rest of the phone and clean ''all the affected parts'' using '''Isopropyl Alcohol 90%+''' (available at electronics parts stores), to remove all traces of corrosion and water. Do not use "rubbing alcohol" as in some cases this is only 70% IPA or less, can contain scents and is not as effective. If you do use it check the label to verify the amount of IPA
Here is a link that describes the process.
[[Electronics Water Damage]]
As always with electronics, especially surface mounted PCBs be gentle when handling and especially when brushing away the corrosion. You do not want to remove any components from the board.
Hopefully after you have done all this the phone ''might'' possibly work correctly again.
Here is a link to the ifixit guide for repairing the touchscreen in your phone.
[guide|63943]
If this process seems too daunting, take your phone to a reputable, professional phone repair service, experienced in water damage repair and ask for a quote for a repair. If you decide to do this, ''do it sooner than later''.
You could always try connecting a USB mouse via an [https://www.amazon.com/BlackBerry-Micro-USB-Data-Transfer-connecting-compatible/dp/9791183074|OTG cable] to navigate through the phone so that you can email your contacts / pictures back to a computer or set up the phone so that you can connect a computer to it via a USB cable so that you can access the storage folders (for the pictures - don’t know about the contact info though)