Delegators can choose to delegate their tokens to any registered SKALE validator. The main factors for delegators in choosing a validator will include the node performance (SLA), the commission rate set by the validator, and the reputation of the validator. After researching validators and understanding the risks involved (slashing), delegators can decide the number of tokens they want to delegate and which validator they will partner with.
Note that validators can choose to decline individual delegation or not accept any at all, so please check on your delegation once you submitted it.