You need to enter script – sv_cheats 1 in the console. It allows you to enter the cheats, after this you need to enter the following commands:
sv_staminalandcost 0 or sv_staminajumpcost 0
1. Where I can do Bunnyhop in CS:GO?
You can do bunnyhop in CSGO community servers. This is only allowed on the custom polygons. If you are playing with enabling BHOP, this can be considered as cheating and cause of the ban.
2. Where can I learn Bunnyhop in CSGO?
You can learn bunnyhop from the following maps:
You can do practice here and then go for professional matches to show you skills with bhop.