Should I close my bank account or withdraw money and leave it as it is ?

I have several accounts in many banks, 2 with the same bank, in total 5. I am now in a cleanup mode and want to only keep 2 accounts.

1: What is better? Closing the other accounts or just withdraw all the money and forget about it?

2: I have heard that closing a bank account is a tedious task, so will it be better if i just withdraw all money and keep the spare accounts dormant?

3: Will this affect my credit score?