Is it against the FiveM policy to sell an already existing server or a script to someone else ?
Yes, if you read the FiveM ToS:
- No financial profit shall be derived by the Users from any derivative of, or third-party service,
User Generated Content, or Game Server for FiveM, the Game Services, or other entities
stated in these Terms, except as expressly permitted by CitizenFX. Entities with permission
may be included under ADDENDUM D: LIST OF EXCEPTIONS FOR TERM ‘8’
You can see that put simply you cannot charge for anything that comes under anything listed in the agreement. This includes: Scripts, servers or services.
Post withdrawn.