If nobody has entered the pot ahead of you, you make a standard raise like 2-3BB depending on stack sizes. ATo can be folded, if there are 7-8 players left to act behind you. If effective stacks are around 13BB or less, you typically want to open shove rather than raise small. If someone else have already entered the pot, then all options are on the table depending on position, stack sizes and the strenght of your AX. Folding the weaker ones like ATo or AJo is often the best play, and with the others you can either call or 3-bet. If stacks are 20-25BB or less, a 3-bet should usually be a jam.