Can it grew as well as AXS?
It can't and i will tell you the reasons
1. SLP has unlimited supply
2. SLP is facing a big problem caused by the percentage of SLP burn was less compared with SLP that minted by the players
3. The usability of SLP is still limited.
Also I heard that SLP farming was profitable. Is that actual now with low SLP cost?
Not profitable for now but it's only profitable for the old players who have been buying bunch of axies at cheap price and they were farming SLP and then dump it to the market.
For example can I setup few accounts + farming bots from github like World Of Warcraft?
You can't but you will not able to use bot and you must do that manually otherwise the developers will ban all of your accounts. There was a program called schoolarship.