im not sure what you mean by this, if you are referring to your internet package of which you get is 10mb.
if you have better WIFI devices this will not increase, or are you reffering to something else ?
im assuming you mean the highest speed possible here. well you can get the same or very close of the speed you get over wired connection.
first of all it depends in you are getting wireless interference, if you want good WIFI, most people invest in high end AC routers, which have 2 WIFI band.
first check what speed you are getting to the router, you can check this my running speed test on of your devices via cable connection to your router, or you can check your routers settings and it will display what speed its getting,