Go read the EmulatorNexus Rome rules, high xp is bannable and disabled (not sure)exp Server + Scoring Enabled with few players
Editing the files is hard, if you don't have some exp with coding, and there are NO official mod tools, and the tools that are on their site are broken for newest server files (R34)
As for the scoring it's impossible, make an thread on their forums, and hope that badbau or nofate will reply to you