If someone tells you he is thus filled, you may doubt it as he leaks!
If you have never been born again and are not indwelt with the Holy Spirit, it seems to me you are getting ahead of yourself. The filling is something different from being indwelt and regenerated by the Holy Spirit. The only directions I know of in the Bible for how to be filled are found in Ephesians 3:14-19 where the expression is "filled to all the fullness of God." But don't jump there; start at verse 1 of chapter 1.
Denominations are another topic. Christians do not agree on everything. IMHO the only people in groups that agree on"everything" are cultists. Christians are not know-it-alls. We trust the Lord Jesus as our Savior. There is One Body of Christ consisting of everyone who really trusts Christ as Savior, having Him adequately defined (if not perfectly). When one trusts Christ as Savior, one is transformed from sinner to child of God and baptised by the Holy Spirit into His Church, the One Body of and Bride of Christ. You may disagree with your earthly brothers and sisters on many things, but you surely are part of their family. If you are part of the Geezlepuss Family, you are stuck in it; if your big brother is a Republicrat and your little brother a Libertarian, while you remain a Green Party enthusiast, you are all still a bunch of Geezlepusses. Of course there may be some imposter Geezlepusses around who found the Knights of the Geezlepuss. That doesn't invalidate the Noble Geezlepuss family.
To know what someone is filled with, see what spills out when they get shaken!