iPhone water damage

Hi, I recently founf my phone after it being lost. It was in my garden bed hiding under a bush, still being exposed to the rain as well though( so possible water damage).My phone was out of charge when losing it and then after days I found it. My phone was quite wet but I immediately took out the SIM card and put the phone in a bag of rice. What is my best bet with the phone? Will it ever turn on again? I’ve taken it to an Apple repair centre but it will take 5-7 business days before they do anything. I am really nervous and just praying and trying to keep positive that they will be able to turn my phone on. Does anyone have a similar experience or knowledged in this and know a likely outcome?