Need 16.0 indesign

for the current and one previous versions use the cc app:

https://helpx.adobe.com/download-install/using/install-previous-version.html#:~:text=Install%20Previous%20Versions%20of%20your%20Creative%20Cloud%20Apps,drop-down%20list%2C%20click%20Other%20Versions.%20Does...%20See%20More.

for cc 2019 and earlier use prodesigntools.com*

for everything else, you must use adobe support** (and it may take a few tries to find an agent to provide links).

*

adobe download links prior to cc 2020 are available from prodesigntools.com. https://prodesigntools.com/adobe-direct-download-links.html

follow the directions (esp, step 1)

save the install file.  it may not remain online.

thank jim @ prodesigntools.com

**

use a browser that allows popups and cookies and contact adobe support by clicking here, https://helpx.adobe.com/contact.html?rghtup=autoOpen
in the chat field (lower right), type AGENT
be patient, it can take quite a while to reach a human

p.s you can also use phone (but chat is usually quicker), https://helpx.adobe.com/contact/phone.html

p.p.s. you can also use twitter to tweet @AdobeCare

p.p.p.s. if you're contacted by anyone (via email or private message), it's much more likely to be a scammer than an adobe representative. ie, double check for an employee badge if contacted in the forums and look for an adobe.com domain in the email address if you click reply to an email. then check again and be very suspicious. any other method of contacting (or offering to contact you) is almost certainly a scam, https://community.adobe.com/t5/using-the-community-discussions/staying-safe-in-the-adobe-support-community/td-p/12919684/redirect_from_archived_page/true

Hi @Pooja2723732061dg,

The only way you can get CC2020 installer is via contacting Adobe support. To contact support follow the instructions given below
1. Go to https://helpx.adobe.com/contact.html?rghtup=autoOpen
2. Wait a bit on the page that opens up, it should automatically open a chat popup. If that does not happen then look for a call out/chat icon at the bottom right, click over it and the chat popup should open
3. In order to talk to a human type "AGENT" in the chat box
4. If you are not able to get to the chat window, then disable your adblockers, firewall, enable cookies/scripts on your browser. If it still fails then change your browser/machine/network.

P.S. Be mindful of answering anyone who sends you a private message. See the following for more information about scammers
https://tinyurl.com/y7cfrr7y
-Manan

You can get CC 2020 

But individual installers for 2020 are not available

https://prodesigntools.com/adobe-cc-2020-direct-download-links.html#:~:text=Offline%20installers%20for,use%20and%20download.

You can get the individual installer for 2019 InDesign.