Alongside being able to purchase ICONs on the Transfer Market or finding them in Packs, you can also get them via Swap Icons. All you have to do is to complete specific objectives, receive player tokens and redeem for ICON rewards available in one of the three Swaps release, each one containing at least 20 individual ICONs, from a range of versions (base, mid or prime). An Icon cannot be released more than once. Each ICON Swaps release will have a unique set of Player Tokens tied to it. Each Individual ICON in an ICON Swaps will require a certain number of Player Tokens in order to redeem. Player Tokens will be released over the duration of each ICON Swaps release and each one can only be redeemed in that specific ICON Swaps release. They do not roll over to the next ICON Swaps release. Similar to FUT Swap Deals, you will need to choose which ICONs you want to unlock based on how many Player Tokens you have earned.
In this page, you can find the complete list of Objectives and Rewards for each FIFA 20 Icon Swaps release. All release times are indicated in the UK time zone.