If the exodus happened it would go a long way to the credibility of the Bible tough it would not provide much support for God.
What would provide support would be:
-If one found the way the jews travled and found a sea that had evidence of being parted by the breth of god (wind) my guess is the flor would still show evidence of it being blown on by a high velocity wind.
- If all the 10 plagues happened in a relatively short time as the bible says and that at least a few natural causes could be explained away for instance in times of hunger Egyptians feed their firstborns double the ration of others in the family and if the grain was say moldy the firstborns would have a grater chance of dying from eating it because they ate more.
- A golden calf under a mountain and god residing on top of that mountain
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