5000 mAh 30c means that the battery is rated for (5*30= 150) Amps if i’m correct. That rating is always a little bit exaggerated by the battery manufacturer so i would stay under that.
I would suggest starting at 30 battery amps and -10 braking amps in the vesc tool to get a feel for it, after that you can go up a bit if you want but i wouldn’t go higher than 80 as your flipsky vesc probably doesnt like it.
For motor amps, start with about 50 and adjust to preference. You can set motor breaking amps to about -25. Motor amps are usually 30% more than battery amps in my personal experience. (The reason behind that is a but complex so i wont bother explaining) ((also i can’t explain it because i don’t know it in detail lol))