how i make float move from 0 to 1 smoothly because i want to make car turbo and when releases make bov sound

meta sound was introduced in UE 5. If you are just migrating to UE I would say there is no reason to use UE4 over UE5 but in case you insist on using UE4 there is a system called sound cue which should be still capable enough to do the job.