1976 Dodge Dart- Won’t Start.....

I am very new to mechanics and especially electrical issues..... I have 1976 Dodge Dart with a Slant Six.... It’s been running great... until now.

I know the battery is good. But I let it sit for awhile (1 month) in the bad weather. A bit of water infiltration into the interior (etc).

I tried starting it and at first the starter would catch intermittently, then it went to making a buzzing sound and no starter, and now it makes no sound at all....

I could hear a buzzing sound for awhile (like over 20 attempts to start) but now nothing.

Any ideas?