Hi. Welcome to justanswer.
First do some troubleshooting to confirm if there is a damage or not.
When the phone is still plugged in (charging), press and hold the Power key and Volume Down button for about 10-15 seconds and see does it respond?
Now press and hold the Power button to turn on the phone
Great. It will stay on now until the battery remains. Don't let it get completely discharged. If it does then you have to follow the same procedure. Pressing and holding Volume down and power button simultaneously.
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Thanks for the ratings. If you get any query then do let me know. Enjoy the weekend.