Hi, I am totally new to map making and followed a tutorial on Youtube on how to make a map. So I did all that, but when the map starts, I start without a gun and when I go down with QR I have a Colt 1911 instead of Mustang & Sally. How do I fix this? I think I saw in a different post you need to change code or something to fix it. But I have no idea where or how to change codes for it.

You must have skipped a step. Double check ugx wiki.
If you use a script placer to generate a map with the sniperbolt room option checked and then compile your map, patch and mod you should be able to load the map, use perks, buy weapons, shoot zombies ect ect without any problems or editing anything.

Make sure when compiling that there are not any red errors about the fastfile or something like "cant access directory".
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What script placer did you use?
What's your mapname?