Galaxy s6 screen low geekbench 4 results and corner of the glass seems dettached

Hello there.
some weeks ago i got a galaxy s6 and i'm pretty happy with it. When i first got it, i had normal geekbench 4 results. But now i'm getting pretty low results.
about 1394 single cre and 3863 in multi core.

also last night my cousin was so drunk that he dropped my phone once or twice with a ****y cover in but when i looked carefully, i saw that at the right side, where the power button is, some kid of air bubbles appeared, and where i press it they seems to disappear!
i'm so worried!!
Would heating it with a heatgun will fix the corner problem? and i don't think that dropping the phone could cause performance problems. Right? right??

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