is there a way to increase the vxp points faster And what bases that is easy and can increase to vxp points easily

If you see any base that has a percent over it, that base will give you additional VXP. For instance this HZ90 will give your Units 250% + 100% VXP, so your Units will get 350% of normal VXP.

For instance this HZ90 will give your Units 250% + 100% VXP, so your Units will get 350% of normal VXP.