To follow SAP ABAP, you'll a minimum of want the Netweaver that may be licenced software package which too not an inexpensive one. I suggest you wait for your company to set up the server and then practise.
The other possibility is you'll use Amazon net Services to rent a server. It will cost you in proportion to your usage.
There is a 3rd choice to get a pirated software package from some sellers. But I'll advise against it because it could even crash your machine.
The best option is to wait for your company to provide you with a server. ABAP is not hard, so don't worry.