If my opponent used Lickilicky's "Selickt" attack, can I choose the option to discard from my hand if I have less than 3 cards in my hand?
If you have no cards in your hand, you must discard cards from your deck. But if you have at least 1 card in your hand, you can choose either option.
Source: Battle Styles FAQ; TPCi Rules Team (2021-03-18)
If I use Cacturne's "Pull" attack, who chooses which Pokemon becomes Active?
The attacking player chooses which of the opponent's Pokemon becomes Active.
Source: Battle Styles FAQ; TPCi Rules Team (2021-03-18)
If I use Victini V's "V Bullet" attack or Victini VMax's "Max Victory" attack and my opponent’s Active Pokemon is a VMax Pokemon, does the attack do more damage?
Yes, per the Rule Book, Pokemon VMAX are always considered to be Pokemon V.
Source: Battle Styles FAQ; TPCi Rules Team (2021-03-18)
Does going to the bench reset Kricketune V's "Exciting Stage" Ability?
No. Even if it leaves play and comes back, you can still only use one Exciting Stage Ability per turn even if you have 2 different Kricketune V in play. It is a Game State check, not an effect.
Source: Battle Styles FAQ; TPCi Rules Team (2021-03-18)
Does the box regarding taking prizes for KO'ing a Pokémon-ex from the EX-era (like EX Ruby & Sapphire) count as a "Rule Box" for the purpose of Empoleon V's "Emperor's Eyes" Ability?
No, the term Rule Box does not apply to anything prior to Black & White. As of the date of this ruling these things are covered by Rule Box: Pokémon V, Pokémon VMAX, Pokémon-GX, TAG TEAM, Prism Star, Pokémon-EX, Mega Evolution, and Pokémon BREAK (any future cards that may have a Rule Box are also covered.)
Source: TPCi Rules Team (2021-03-18)
If my Mimikyu V with the "Dummy Doll" Ability protection is moved to or from my Bench during my opponent's turn by a switching action such as Boss's Orders is it no longer protected?
It is still protected. It is an effect from an Ability, not from an attack, and so is not removed by moving to or from the bench.
Source: Battle Styles FAQ; TPCi Rules Team (2021-03-18)
If I play Mimikyu V with the "Dummy Doll" Ability to my Bench and then make it Active, does it keep the protective effect of "Dummy Doll", or is that removed when it moves from the Bench to the Active Spot?
You keep the protective effect of the Ability; it's not like losing an attack effect when moving from the Active Spot to the Bench.
Source: Battle Styles FAQ; TPCi Rules Team (2021-03-18)
If I have Kingdra with the "Deep Sea King" Ability on the bench and my opponent uses Heatmor's "Burning Licks" attack that discards energy cards from my Active Pokemon and also knocks it out, can I move those energy cards to Kingdra before they are discarded?
No, the discard effect of the attack happens first, but you don't move energy for Deep Sea King until after you resolve the Knock Out.
Source: Battle Styles FAQ; TPCi Rules Team (2021-03-18)
Wally says "you can use this card on your first turn or on a Pokemon that was put into play this turn". Does that mean I can use Wally on the very first turn of the game when I am not allowed to play Supporter cards?
No, Wally does not override the game rule of the player going first not being able to play Supporter cards on their first turn. You can only play Wally on your first turn if you are going second.
Source: TPCi Rules Team (2021-02-04)