Terror Menu -

Rockstar Games provides specific channels for reporting third-party software like Terror:

Use of a Mod Menu (Terror) to gain an unfair advantage or disrupt gameplay. TERROR MENU

Be aware that some high-end menus like Terror have "protections" that can sometimes block or intercept in-game reports, or even crash the reporter’s game. Using the external Rockstar Support webform is generally considered the most secure way to ensure your report is received. TERROR MENU