HELLO can someone help what ssd should i get i have no idea what size and stuff

Bleron

1. System: windows
2. Battery or AC:
3. Model: VIVOBOOK X542UQ DM142
4. Frequency of occurrence:
5. Reset OS:
6. Screenshot or video:

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Detailed description：

Bleron

i have a i7 7 gen gpu 940 mx and i have a hdd 1tb i wanted to upgrade but u have no clue what ssd do i ceep the hdd do i get a diferent type of ssd i have no clue any help appriciated